[doc] Fix linalg.cholesky doc consistency issues (#51459)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/51459
This PR is part of a larger effort to ensure torch.linalg documentation is consistent (see #50287).
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D26176131
Pulled By: heitorschueroff
fbshipit-source-id: 2ad88a339e6dff044965e8bf29dd8c852afecb34
