DOC: Update web documentation of geometric_ to be consistent with Tensor behaviour (#20091)
Summary:
Fix #19940 by updating web doc to reflect Tensor behaviour which will reflect [here](https://pytorch.org/docs/stable/tensors.html#torch.Tensor.geometric_)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20091
Differential Revision: D15196734
Pulled By: soumith
fbshipit-source-id: a1b8aff9599f170e76a9cbca5112b5a9488bc36c
