Change "user name" to one word in remembering-your-github-username-or-email#finding-your-username-in-the-url-of-remote-repositories

[nguyenalex836]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-personal-account-on-github/managing-email-preferences/remembering-your-github-username-or-email#finding-your-username-in-the-url-of-remote-repositories

What part(s) of the article would you like to see updated?

Your user name is what immediately follows the https://github.com/.

Make "user name" one word to maintain consistency with the rest of our docs

Additional information

No response