Adding clarification about EMU users being able to view public repositories on github.com

[datanerd]

Why:

Closes [issue link]

What's being changed:

While users in EMU instance are restricted to only make changes in repos within their enterprise, they still have read only access to the broader github.com

/cc @fatenhealy @affrae

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Writer impact (This section is for GitHub staff members only):

• This pull request impacts the contribution experience
  • I have added the 'writer impact' label
  • I have added a description and/or a video demo of the changes below (e.g. a "before and after video")

[github-actions]

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The table contains an overview of files in the content directory that have been changed in this pull request. It's provided to make it easy to review your changes on the staging site. Please note that changes to the data directory will not show up in this table.

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Content directory changes

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Source	Staging	Production	What Changed
content/admin/authentication/managing-your-enterprise-users-with-your-identity-provider/about-enterprise-managed-users.md	Modified	Original

[ramyaparimi]

@andrekolodochka
Thanks so much for opening a PR! I'll get this triaged for review ⚡

[lecoursen]

Thanks @andrekolodochka, definitely useful to clarify! I'll apply a small suggestion and merge now.

[github-actions]

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