AE documentation should be clarified to include repo size limits

[gitstua]

Code of Conduct

• [X] 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/github-ae@latest/repositories/working-with-files/managing-large-files/about-large-files-on-github#removing-files-from-a-repositorys-history

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

Add repo size limits to AE which show for GHEC

Additional information

Customer seeks clarification as to size limits and I think this would help this customer and other users of AE. @pevd950 and I discussed this is the correct guidance in #ghae channel

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[cmwilson21]

👋 @gitstua Thank you for opening an issue and linking it to your PR! ✨