Fixed typos and grammatical errors (#27465)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/27443
Pull Request resolved: https://github.com/pytorch/pytorch/pull/27465
Differential Revision: D17810732
Pulled By: pietern
fbshipit-source-id: b8a62dd086a4f4a61c9aa6acfa495cf822995604
