fix(docs): remove redundant hardsigmoid() in docstring to show up `inplace` parameter (#52559)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/50016
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52559
Reviewed By: ailzhang
Differential Revision: D26636347
Pulled By: vkuzo
fbshipit-source-id: da615d0eb6372637a6441e53698e86252591f6d8
