[docs][ao] update quantize_per_tensor to mention overloads (#63165)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63165
Add details about the overloads for
* list of tensors input
* supporting tensor scale/zero-point inputs
Test Plan:
CI
Imported from OSS
Reviewed By: bdhirsh
Differential Revision: D30291045
fbshipit-source-id: 9fc6418792c5e3a35417eeb8d31de4a4bfcbb7a5
