[Documentation] Minor rendering issue (#84856)
There is a Rendering issue with the docstring of nn.GELU.
Hope this fixes the [issue.](https://pytorch.org/docs/stable/generated/torch.nn.GELU.html)
cc: @malfet
Pull Request resolved: https://github.com/pytorch/pytorch/pull/84856
Approved by: https://github.com/kit1980
