fix bullet point numbering in github

Author: Prashant-Surya

self-hosting/govern/integrations/github.mdx

@@ -136,6 +136,6 @@ To configure GitHub integration, you'll need to create a GitHub App within your
     GITHUB_PRIVATE_KEY=<private_key>
     ```
 
-8. Save the file and restart the instance. 
+9. Save the file and restart the instance.
 
-9. Once you've completed the instance configuration, [activate the GitHub integration in Plane](https://docs.plane.so/integrations/github).
+10. Once you've completed the instance configuration, [activate the GitHub integration in Plane](https://docs.plane.so/integrations/github).