Fix `torch.dsplit` docs dim specification (#70557)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/70445.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/70557
Reviewed By: ngimel
Differential Revision: D33542864
Pulled By: mruberry
fbshipit-source-id: c3a7929bfcd964da99225ad715f4546f1fc8002a
