I’m totally new on GitHub, and don’t know how to make good use of it. How do l make use of this link https://docs.github.com/en/authentication/connecting-to-github-with-ssh/testing-your-ssh-connection?platform=windows ??
My purpose is to try out my SSH key.


Yes, whatever shell your WSL is using. Usually, it should be the Ubuntu default Bash, but if you happen to have chosen a distro that uses Fish or installed it yourself, it’s Fish.