Move period inside quotation marks in managing-your-profile-readme#adding-a-profile-readme

[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-github-profile/customizing-your-profile/managing-your-profile-readme#adding-a-profile-readme

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

For example, if your username is "octocat", the repository name must be "octocat".

Move period inside quotation marks to maintain consistency with other docs and our style guide

Additional information

No response