Documentation for `torch.optim.swa_utils` (#41228)
Summary:
This PR adds a description of `torch.optim.swa_utils` added in https://github.com/pytorch/pytorch/pull/35032 to the docs at `docs/source/optim.rst`. Please let me know what you think!
vincentqb andrewgordonwilson
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41228
Reviewed By: ngimel
Differential Revision: D22609451
Pulled By: vincentqb
fbshipit-source-id: 8dd98102c865ae4a074a601b047072de8cc5a5e3
