Fix no_sync docs (#45455)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/45455
Test Plan: Imported from OSS
Reviewed By: pritamdamania87
Differential Revision: D23973365
Pulled By: mrshenli
fbshipit-source-id: 87c9878cdc7310754670b83efa65ae6f877f86fb
