Clang-format test_c10d.py (#52978)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52978
ghstack-source-id: 122701029
Test Plan: N/A
Reviewed By: zhaojuanmao
Differential Revision: D26713240
fbshipit-source-id: 25301f794a68bee3d6a73d15986a96edab498310
