Fix typo in common_utils.py (#61365)
Summary:
Missed this in review of https://github.com/pytorch/pytorch/pull/57953. I don't think this has affected much, though.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61365
Reviewed By: walterddr
Differential Revision: D29593764
Pulled By: janeyx99
fbshipit-source-id: 2c6f6aa961eabca0d8b8a7607aaae979667cca3b
