Merge branch 'poffey21-master-patch-02332' into 'master'

Add link to Projects API

Closes #207052

See merge request gitlab-org/gitlab!25903

doc/api/groups.md

@@ -498,7 +498,7 @@ Parameters:
 
 ## Transfer project to group
 
-Transfer a project to the Group namespace. Available only to instance administrators. Transferring projects may fail when tagged packages exist in the project's repository.
+Transfer a project to the Group namespace. Available only to instance administrators, although an [alternative API endpoint](projects.md#transfer-a-project-to-a-new-namespace) is available which does not require instance administrator access. Transferring projects may fail when tagged packages exist in the project's repository.
 
 ```
 POST  /groups/:id/projects/:project_id