Edit SiLU documentation (#53239)
Summary:
I edited the documentation for `nn.SiLU` and `F.silu` to:
- Explain that SiLU is also known as swish and that it stands for "Sigmoid Linear Unit."
- Ensure that "SiLU" is correctly capitalized.
I believe these changes will help users find the function they're looking for by adding relevant keywords to the docs.
Fixes: N/A
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53239
Reviewed By: jbschlosser
Differential Revision: D26816998
Pulled By: albanD
fbshipit-source-id: b4e9976e6b7e88686e3fa7061c0e9b693bd6d198
