Add type annotations to conv-relu (#47680)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/47679
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47680
Reviewed By: zhangguanheng66
Differential Revision: D25416628
Pulled By: malfet
fbshipit-source-id: 103bea1e8c300990f74689787a71b1cfe916cfef