Fix the spelling from "Share Alike" to "ShareAlike"

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/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/licensing-a-repository

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

Please remove the space from "Share Alike" in reference to a Creative Commons license.
The docs should be changed because the Creative Commons website doesn't use a space to spell it. It supports the use case of consistently following the style guide, though it doesn't specifically mention spaces in names. It may also be applied to translations, but I don't know where to find the files for them.

Additional information

https://creativecommons.org/licenses/by-sa/4.0/
https://en.wikipedia.org/wiki/Share-alike
#27386

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[cmwilson21]

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