Contributing to Pytorch Documentation

Hello Community, we have recently merged our code to Pytorch (Disables denormal floating numbers on ARM CPU by maajidkhann · Pull Request #115184 · pytorch/pytorch · GitHub) and we are yet to update the documentation. Just checking how to create a pull request to update documentation?

This is the page we are looking to update:

Is there any branch in Pytorch github, where we can update? Please assist. Thanks.