Fixd callback URLs in GitHub integration

Author: danciaclara

self-hosting/govern/integrations/github.mdx

@@ -85,15 +85,15 @@ To configure GitHub integration, you'll need to create a GitHub App within your
             **For Plane cloud instance**  
 
                ```bash
-               https://silo.plane.so/api/github/auth/callback
-               https://silo.plane.so/api/github/auth/user/callback
+               https://silo.plane.so/api/github-enterprise/auth/callback
+               https://silo.plane.so/api/github-enterprise/auth/user/callback
                ```
 
             **For Plane self-hosted instance**  
 
                ```bash
-               https://<your-domain>/silo/api/github/auth/callback
-               https://<your-domain>/silo/api/github/auth/user/callback
+               https://<your-domain>/silo/api/github-enterprise/auth/callback
+               https://<your-domain>/silo/api/github-enterprise/auth/user/callback
                ```
 
          These URLs allow Plane to verify and enable workspace connection with the Github App.