Modify repeat_interleave docs to highlight potential overloading (#99650)
Fixes #99259 , drawing to attention that input is optional by putting a variation of the method signature at the top of the file and by modifying the input arguments.
Note that I'm not certain how to get the additional signature at the same level of indentation as the first one, but I think this change does a good job of highlighting the change is optional.
Would be happy to iterate on this if there are any issues.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99650
Approved by: https://github.com/mikaylagawarecki
