clarify that `torch.finfo.tiny` is the smallest normal number (#63241)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63241
This is a common source of confusion, but it matches the NumPy
behavior.
Fixes #44010
Fixes #59526
Test Plan: Imported from OSS
Reviewed By: ejguan
Differential Revision: D30307646
Pulled By: dagitses
fbshipit-source-id: d848140ba267560387d83f3e7acba8c3cdc53d82
