Fix grammar and spelling errors (#46713)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/46713
Test Plan: Imported from OSS
Reviewed By: Lilyjjo
Differential Revision: D24477771
Pulled By: ansley
fbshipit-source-id: bc39b63ab2158a5233e48b89bfaa97a4cfb1f7a1
