[docs] Fix hyperlinks for nn.CrossEntropyLoss (#45660)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/45460. This PR makes it so that LogSoftmax and NLLLoss are correctly linked from the nn.CrossEntropyLoss documentation.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45660
Test Plan:
- built and viewed docs locally
Reviewed By: glaringlee
Differential Revision: D24049009
Pulled By: zou3519
fbshipit-source-id: 3bd0660acb8575d753cefd2d0f1e523ca58a25b6
