[docs] Add cross references to torch.transpose and torch.t

**Summary**
This commit adds a link in the documentation for `torch.transpose` that
directs to `torch.t` and vice versa. These two functions are related and
it is useful for users of one to know about the other.

**Test Plan**
Continuous integration.

**Fixes**
This commit fixes #56267.

ghstack-source-id: d144b9cd7fbc015d2296fc76cee1869daa69fb14
Pull Request resolved: #63177

torch/_torch_docs.py

@@ -9350,6 +9350,8 @@ def merge_dicts(*dicts):
     tensor([[ 0.4875,  0.3938],
             [ 0.9158, -0.6929],
             [-0.5872,  0.6932]])
+
+See also :func:`torch.transpose`.
 """.format(**common_args))
 
 add_docstr(torch.flip,
@@ -9709,6 +9711,8 @@ def merge_dicts(*dicts):
     tensor([[ 1.0028, -0.1669],
             [-0.9893,  0.7299],
             [ 0.5809,  0.4942]])
+
+See also :func:`torch.t`.
 """.format(**common_args))
 
 add_docstr(torch.triangular_solve,