Github -> GitHub (#53823)

Author: mchammer01

content/copilot/building-copilot-extensions/building-a-copilot-skillset-for-your-copilot-extension/building-copilot-skillsets.md

@@ -5,7 +5,7 @@ versions:
   feature: copilot-extensions
 topics:
   - Copilot
-shortTitle: Build {% data variables.product.prodname_copilot_skillsets_short %} 
+shortTitle: Build {% data variables.product.prodname_copilot_skillsets_short %}
 type: how_to
 ---
 
@@ -25,7 +25,7 @@ Before you begin, make sure you have the following:
     * Be able to verify the signature of requests from {% data variables.product.github %} to authenticate their origin and prevent unauthorized access
     * Be publicly accessible via HTTPS
 
-For more information about signature verification, see [Verifying that payloads are coming from Github](/copilot/building-copilot-extensions/building-a-copilot-agent-for-your-copilot-extension/configuring-your-copilot-agent-to-communicate-with-github#verifying-that-payloads-are-coming-from-github).
+For more information about signature verification, see [Verifying that payloads are coming from {% data variables.product.github %}](/copilot/building-copilot-extensions/building-a-copilot-agent-for-your-copilot-extension/configuring-your-copilot-agent-to-communicate-with-github#verifying-that-payloads-are-coming-from-github).
 
 ## Configuration requirements