Update the auto_feedback_from_code_execution notebook to use code executor (microsoft#2366)

* Use code executors in notebook.

* Add custom code executor guide

* Add to gitignore

* Update

* fix links

* link

* typo

---------

Co-authored-by: Chi Wang <[email protected]>

Author: ekzhu

.gitignore

@@ -188,3 +188,5 @@ local_cache
 
 notebook/result.png
 samples/apps/autogen-studio/autogenstudio/models/test/
+
+notebook/coding

.pre-commit-config.yaml

@@ -43,6 +43,7 @@ repos:
               website/static/img/ag.svg |
               website/yarn.lock |
               website/docs/tutorial/code-executors.ipynb |
+              website/docs/topics/code-execution/custom-executor.ipynb |
               website/docs/topics/non-openai-models/cloud-gemini.ipynb |
               notebook/.*
             )$