s/foward/forward/g (#58497)
Summary:
Annoying typo.
Prompted by these profiling results: https://github.com/pytorch/pytorch/issues/56419#issuecomment-825787828
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58497
Reviewed By: malfet
Differential Revision: D28521081
Pulled By: Chillee
fbshipit-source-id: ab91a2e167dd7d3387fd56106a6cff81f7a32f10
