[docs] fix torch.histc's min/max arg types (#64191)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/31475. `torch.histc` accepts Scalar min/max. The docs erroneously specified their types as int.
cc brianjo mruberry
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64191
Reviewed By: mrshenli
Differential Revision: D32437279
Pulled By: saketh-are
fbshipit-source-id: e6017e9236d815abd818dcd44e27819611666823
