Implement derivatives for torch.remainder and torch.fmod wrt the second argument and update the docs (#69908)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69908
I also took this chance to clarify a bit the documentation of these
functions.
cc brianjo mruberry
Test Plan: Imported from OSS
Reviewed By: anjali411
Differential Revision: D33774417
Pulled By: mruberry
fbshipit-source-id: ab4a9014006783d1f87d432ecb959c854374c2d4
(cherry picked from commit f319a75d781bbe12a48ef1ffd21d3874dfee3bfa)
