chore(ia): Tidy MDN meta dir

files/en-us/_redirects.txt

@@ -2676,7 +2676,7 @@
 /en-US/docs/Detecting_device_orientation	/en-US/docs/Web/API/Device_orientation_events/Detecting_device_orientation
 /en-US/docs/Determining_the_dimensions_of_elements	/en-US/docs/Web/API/CSS_Object_Model/Determining_the_dimensions_of_elements
 /en-US/docs/DeviceAcceleration	/en-US/docs/Web/API/DeviceMotionEventAcceleration
-/en-US/docs/Devmo:How_to_Help	/en-US/docs/MDN/Community/Contributing/Getting_started
+/en-US/docs/Devmo:How_to_Help	/en-US/docs/MDN/Community/Getting_started
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 /en-US/docs/Distribution_options/Add-ons_in_the_enterprise	https://extensionworkshop.com/documentation/enterprise/
@@ -3543,7 +3543,7 @@
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-/en-US/docs/Getting_started_on_MDN	/en-US/docs/MDN/Community/Contributing/Getting_started
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 /en-US/docs/Glossary/502	/en-US/docs/Web/HTTP/Status/502
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@@ -3983,7 +3983,7 @@
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-/en-US/docs/How_to_start_contributions_to_Mozilla	/en-US/docs/MDN/Community/Contributing/Getting_started
+/en-US/docs/How_to_start_contributions_to_Mozilla	/en-US/docs/MDN/Community/Getting_started
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 /en-US/docs/IPv6	/en-US/docs/Glossary/IPv6
@@ -5788,14 +5788,20 @@
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 /en-US/docs/MDC:How_to_Help	/en-US/docs/MDN/Community/Contributing
 /en-US/docs/MDN/About	/en-US/docs/MDN/Writing_guidelines
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 /en-US/docs/MDN/At_ten/Contributing_to_MDN	/en-US/docs/MDN/Community/Contributing
+/en-US/docs/MDN/At_ten/History_of_MDN	https://developer.mozilla.org/en-US/about#our_journey
+/en-US/docs/MDN/Changelog	/en-US/docs/MDN/Writing_guidelines/Changelog
+/en-US/docs/MDN/Community/Contributing/Getting_started	/en-US/docs/MDN/Community/Getting_started
+/en-US/docs/MDN/Community/Contributing/Security_vulnerability_response	/en-US/docs/MDN/Community/Security_vulnerability_response
+/en-US/docs/MDN/Community/Contributing/Translated_content	/en-US/docs/MDN/Community/Translated_content
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 /en-US/docs/MDN/Community/Users_teams	/en-US/docs/MDN/Community/Roles_teams
 /en-US/docs/MDN/Contribute	/en-US/docs/MDN/Community/Contributing
-/en-US/docs/MDN/Contribute/Changelog	/en-US/docs/MDN/Changelog
+/en-US/docs/MDN/Contribute/Changelog	/en-US/docs/MDN/Writing_guidelines/Changelog
 /en-US/docs/MDN/Contribute/Code_sample_guidelines	/en-US/docs/MDN/Writing_guidelines/Writing_style_guide/Code_style_guide
 /en-US/docs/MDN/Contribute/Content	/en-US/docs/MDN/Writing_guidelines
 /en-US/docs/MDN/Contribute/Content/Content_blocks	/en-US/docs/MDN/Writing_guidelines/Howto/Markdown_in_MDN
@@ -5813,8 +5819,8 @@
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 /en-US/docs/MDN/Contribute/Feedback	/en-US/docs/MDN/Community
 /en-US/docs/MDN/Contribute/Fixing_MDN_content_bugs	/en-US/docs/MDN/Community/Contributing
-/en-US/docs/MDN/Contribute/Getting_started	/en-US/docs/MDN/Community/Contributing/Getting_started
-/en-US/docs/MDN/Contribute/GitHub_beginners	/en-US/docs/MDN/Community/Contributing/Getting_started
+/en-US/docs/MDN/Contribute/Getting_started	/en-US/docs/MDN/Community/Getting_started
+/en-US/docs/MDN/Contribute/GitHub_beginners	/en-US/docs/MDN/Community/Getting_started
 /en-US/docs/MDN/Contribute/GitHub_best_practices	/en-US/docs/MDN/Community/Issues
 /en-US/docs/MDN/Contribute/GitHub_cheatsheet	/en-US/docs/MDN/Community/Issues
 /en-US/docs/MDN/Contribute/Guidelines	/en-US/docs/MDN/Writing_guidelines
@@ -5864,7 +5870,7 @@
 /en-US/docs/MDN/Contribute/Howto/Write_an_API_reference/Information_contained_in_a_WebIDL_file	/en-US/docs/MDN/Writing_guidelines/Howto/Write_an_api_reference/Information_contained_in_a_WebIDL_file
 /en-US/docs/MDN/Contribute/Howto/Write_an_API_reference/Sidebars	/en-US/docs/MDN/Writing_guidelines/Howto/Write_an_api_reference/Sidebars
 /en-US/docs/MDN/Contribute/Howto/Write_for_SEO	/en-US/docs/MDN/Writing_guidelines/Writing_style_guide
-/en-US/docs/MDN/Contribute/Localize	/en-US/docs/MDN/Community/Contributing/Translated_content
+/en-US/docs/MDN/Contribute/Localize	/en-US/docs/MDN/Community/Translated_content
 /en-US/docs/MDN/Contribute/Markdown_in_MDN	/en-US/docs/MDN/Writing_guidelines/Howto/Markdown_in_MDN
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 /en-US/docs/MDN/Contribute/Processes	/en-US/docs/MDN/Community/Contributing
@@ -5914,16 +5920,16 @@
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 /en-US/docs/MDN/Contribute/Style_guide/Specification_tables	/en-US/docs/MDN/Writing_guidelines/Page_structures/Specification_tables
 /en-US/docs/MDN/Contribute/Tagging	/en-US/docs/MDN/Writing_guidelines/Howto
-/en-US/docs/MDN/Contribute/Tasks	/en-US/docs/MDN/Community/Contributing/Getting_started
+/en-US/docs/MDN/Contribute/Tasks	/en-US/docs/MDN/Community/Getting_started
 /en-US/docs/MDN/Contribute/Tools	https://github.com/mdn/yari/tree/main/docs
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 /en-US/docs/MDN/Contribute/Tools/KumaScript/Troubleshooting	https://github.com/mdn/yari/tree/main/docs/kumascript/troubleshooting-errors.md
 /en-US/docs/MDN/Contribute/Tools/Sample_server	/en-US/docs/MDN
-/en-US/docs/MDN/Contribute/Where_is_everything	/en-US/docs/MDN/Community/Contributing/Our_repositories
+/en-US/docs/MDN/Contribute/Where_is_everything	/en-US/docs/MDN/Community/Our_repositories
 /en-US/docs/MDN/Doc_status/NSPR	https://firefox-source-docs.mozilla.org/nspr/index.html
 /en-US/docs/MDN/Feedback	/en-US/docs/MDN/Community
-/en-US/docs/MDN/Getting_started	/en-US/docs/MDN/Community/Contributing/Getting_started
+/en-US/docs/MDN/Getting_started	/en-US/docs/MDN/Community/Getting_started
 /en-US/docs/MDN/Guidelines	/en-US/docs/MDN/Writing_guidelines
 /en-US/docs/MDN/Guidelines/CSS_style_guide	/en-US/docs/MDN/Writing_guidelines/Howto/Markdown_in_MDN
 /en-US/docs/MDN/Guidelines/Code_guidelines	/en-US/docs/MDN/Writing_guidelines/Writing_style_guide/Code_style_guide
@@ -5949,11 +5955,13 @@
 /en-US/docs/MDN/Kuma/Introduction_to_KumaScript	https://github.com/mdn/yari/tree/main/docs/kumascript
 /en-US/docs/MDN/Kuma/Tools	https://github.com/mdn/yari/tree/main/docs
 /en-US/docs/MDN/Kuma/Troubleshooting_KumaScript_errors	https://github.com/mdn/yari/tree/main/docs/kumascript/troubleshooting-errors.md
-/en-US/docs/MDN/MDN_Product_Advisory_Board/Members	/en-US/docs/MDN/MDN_Product_Advisory_Board
-/en-US/docs/MDN/MDN_Product_Avisory_Board	/en-US/docs/MDN/MDN_Product_Advisory_Board
-/en-US/docs/MDN/MDN_Product_Avisory_Board/Members	/en-US/docs/MDN/MDN_Product_Advisory_Board
-/en-US/docs/MDN/MDN_Product_Avisory_Board/Membership	/en-US/docs/MDN/MDN_Product_Advisory_Board/Membership
-/en-US/docs/MDN/Quick_start	/en-US/docs/MDN/Community/Contributing/Getting_started
+/en-US/docs/MDN/MDN_Product_Advisory_Board	https://developer.mozilla.org/en-US/about#our_partners
+/en-US/docs/MDN/MDN_Product_Advisory_Board/Members	https://developer.mozilla.org/en-US/about#our_partners
+/en-US/docs/MDN/MDN_Product_Advisory_Board/Membership	https://developer.mozilla.org/en-US/about#our_partners
+/en-US/docs/MDN/MDN_Product_Avisory_Board	https://developer.mozilla.org/en-US/about#our_partners
+/en-US/docs/MDN/MDN_Product_Avisory_Board/Members	https://developer.mozilla.org/en-US/about#our_partners
+/en-US/docs/MDN/MDN_Product_Avisory_Board/Membership	https://developer.mozilla.org/en-US/about#our_partners
+/en-US/docs/MDN/Quick_start	/en-US/docs/MDN/Community/Getting_started
 /en-US/docs/MDN/Structures	/en-US/docs/MDN/Writing_guidelines/Page_structures
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 /en-US/docs/MDN/Structures/API_references/API_reference_sidebars	/en-US/docs/MDN/Writing_guidelines/Howto/Write_an_api_reference/Sidebars
@@ -5996,10 +6004,10 @@
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 /en-US/docs/MDN/Yari	https://github.com/mdn/yari/tree/main/docs
-/en-US/docs/MDN_at_ten	/en-US/docs/MDN/At_ten
+/en-US/docs/MDN_at_ten	https://developer.mozilla.org/en-US/about#our_journey
 /en-US/docs/MDN_at_ten/Contributing_to_MDN	/en-US/docs/MDN/Community/Contributing
-/en-US/docs/MDN_at_ten/History	/en-US/docs/MDN/At_ten/History_of_MDN
-/en-US/docs/MDN_at_ten/History_of_MDN	/en-US/docs/MDN/At_ten/History_of_MDN
+/en-US/docs/MDN_at_ten/History	https://developer.mozilla.org/en-US/about#our_journey
+/en-US/docs/MDN_at_ten/History_of_MDN	https://developer.mozilla.org/en-US/about#our_journey
 /en-US/docs/Main_page	/en-US/
 /en-US/docs/Managing_screen_orientation	/en-US/docs/Web/API/CSS_Object_Model/Managing_screen_orientation
 /en-US/docs/Manipulating_video_using_canvas	/en-US/docs/Web/API/Canvas_API/Manipulating_video_using_canvas

files/en-us/_wikihistory.json

@@ -11237,54 +11237,6 @@
       "ziyunfei"
     ]
   },
-  "MDN/At_ten": {
-    "modified": "2020-12-14T11:30:31.427Z",
-    "contributors": [
-      "fscholz",
-      "nasimrja",
-      "chandan987",
-      "stephaniehobson",
-      "jsx",
-      "daniellascandles",
-      "h8erofthem8tixs",
-      "jswisher",
-      "chrisdavidmills",
-      "wkforever",
-      "Sheppy"
-    ]
-  },
-  "MDN/At_ten/History_of_MDN": {
-    "modified": "2020-12-12T07:24:50.578Z",
-    "contributors": [
-      "bershanskiy",
-      "Sheppy",
-      "jswisher",
-      "jwhitlock",
-      "stephaniehobson",
-      "groovecoder"
-    ]
-  },
-  "MDN/MDN_Product_Advisory_Board": {
-    "modified": "2019-06-05T12:41:23.682Z",
-    "contributors": [
-      "Sheppy",
-      "wbamberg",
-      "alispivak",
-      "stephaniehobson",
-      "chrisdavidmills",
-      "KadirTopal"
-    ]
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-  "MDN/MDN_Product_Advisory_Board/Membership": {
-    "modified": "2020-08-24T15:00:45.099Z",
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-      "wbamberg",
-      "alispivak",
-      "Sheppy",
-      "KadirTopal"
-    ]
-  },
   "MDN/Writing_guidelines/Howto/Document_a_CSS_property": {
     "modified": "2020-02-18T19:54:27.563Z",
     "contributors": [

files/en-us/learn_web_development/howto/design_and_accessibility/common_web_layouts/index.md

@@ -68,7 +68,7 @@ These are rules of thumb you can draw on. There are complex designs and exceptio
 
 ## Active learning
 
-_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Contributing/Getting_started)._
+_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Getting_started)._
 
 ## Deeper dive
 

files/en-us/learn_web_development/howto/design_and_accessibility/design_for_all_types_of_users/index.md

@@ -36,7 +36,7 @@ When you're building a website, one top issue to consider is [Universal Design](
 
 ## Active Learning
 
-_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Contributing/Getting_started)._
+_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Getting_started)._
 
 ## Dig deeper
 

files/en-us/learn_web_development/howto/design_and_accessibility/thinking_before_coding/index.md

@@ -35,7 +35,7 @@ All of this is called _project ideation_ and is a necessary first step to reach
 
 ## Active Learning
 
-_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Contributing/Getting_started)._
+_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Getting_started)._
 
 ## Deeper dive
 

files/en-us/learn_web_development/howto/design_and_accessibility/what_is_accessibility/index.md

@@ -27,7 +27,7 @@ Because of physical or technical limitations, maybe your visitors can't experien
 
 ## Active learning
 
-_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Contributing/Getting_started)._
+_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Getting_started)._
 
 ## Dig deeper
 

files/en-us/learn_web_development/howto/tools_and_setup/checking_that_your_web_site_is_working_properly/index.md

@@ -38,7 +38,7 @@ Let's see how to diagnose and solve those problems.
 
 ## Active Learning
 
-_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Contributing/Getting_started)._
+_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Getting_started)._
 
 ## Dig deeper
 

files/en-us/learn_web_development/howto/tools_and_setup/what_software_do_i_need/index.md

@@ -45,7 +45,7 @@ Nearly all operating systems by default include a text editor and a browser, whi
 
 ## Active Learning
 
-_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Contributing/Getting_started)._
+_There is no active learning available yet. [Please, consider contributing](/en-US/docs/MDN/Community/Getting_started)._
 
 ## Dig deeper
 

files/en-us/learn_web_development/index.md

@@ -43,7 +43,7 @@ The code examples you'll encounter in the Learning Area are all [available on Gi
 
 If you want to get in touch with us about anything, use the [communication channels](/en-US/docs/MDN/Community/Communication_channels). We'd love to hear from you about anything you think is wrong or missing on the site, requests for new learning topics, requests for help with items you don't understand, or any other questions or concerns.
 
-If you're interested in helping develop/improve the content, take a look at [how you can help](/en-US/docs/MDN/Community/Contributing) and get in touch! We are more than happy to talk to you, whether you are a learner, teacher, experienced web developer, or someone else interested in helping to improve the learning experience.
+If you're interested in helping develop/improve the content, take a look at [how you can help](/en-US/docs/MDN/Community) and get in touch! We are more than happy to talk to you, whether you are a learner, teacher, experienced web developer, or someone else interested in helping to improve the learning experience.
 
 ## See also