Explain the default repository_downloads_path

config/gitlab.yml.example

@@ -78,6 +78,7 @@ production: &base
 
     ## Repository downloads directory
     # When a user clicks e.g. 'Download zip' on a project, a temporary zip file is created in the following directory.
+    # The default is 'tmp/repositories' relative to the root of the Rails app.
     # repository_downloads_path: tmp/repositories
 
   ## External issues trackers