GitLab

Summary:
update the labeling reminder to be triggered when PRs are closed rather than merged, because of the transition of merging through fbcode

Pull Request resolved: https://github.com/pytorch/audio/pull/2160

Reviewed By: nateanl

Differential Revision: D33642490

Pulled By: carolineechen

fbshipit-source-id: bb39c66653782694d967303065d40386689789a8