Small rewording required to a sentence about the `GITHUB_TOKEN`

[hubwriter]

Small change required to this file: content/actions/learn-github-actions/security-hardening-for-github-actions.md

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The following sentence in the section "Considering cross-repository access" in this article is not clear. At first I thought there was a typo and I had to read it a couple of times before I realised what it meant:

Users have specific permissions for each repository, so having the GITHUB_TOKEN for one repository grant access to another would impact the GitHub permission model if not implemented carefully.

Change this to:

Users have specific permissions for each repository, so allowing the GITHUB_TOKEN for one repository to grant access to another would impact the GitHub permission model if not implemented carefully.

[ramizackaryshamir]

Hi all,

I created a pull request for this issues. Please see PR # #4289.
Please ket me know if anything else is needed.

Thanks so much everyone!

[ramizackaryshamir]

Thanks so much @janiceilene!