Fix typo in tensor docs (#64160)
Summary:
Remove extra character from `torch.qfint32`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64160
Test Plan: Docs
Reviewed By: jerryzh168
Differential Revision: D30634700
Pulled By: axitkhurana
fbshipit-source-id: e8952be20966b9a3f9d62d9957ae255d5d4889bb
