[pytorch][PR] Fixed error in sample code of documentation (#31682)
Summary:
"in_features" and "out_features" are not defined. Possibly a typo. They should be "input_features" and "output_features" instead
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31682
Differential Revision: D19251685
Pulled By: zou3519
fbshipit-source-id: ac9e524e792a1853a16e8876d76b908495d8f35e
