Update gitlab.yml.example

config/gitlab.yml.example

@@ -178,6 +178,7 @@ production: &base
         # Use the following options to configure an AWS compatible host
         # host: 'localhost' # default: s3.amazonaws.com
         # endpoint: 'http://127.0.0.1:9000' # default: nil
+        # aws_signature_version: 4 # For creation of signed URLs. Set to 2 if provider does not support v4.
         # path_style: true # Use 'host/bucket_name/object' instead of 'bucket_name.host/object'
 
   ## Uploads (attachments, avatars, etc...)