Add Notice to Logo/Branding Guidelines Button Hovertext [unsuccessful skip ci]

[ghost]

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Description of the Change

This pull request adds a notice to the hovertext of the Logo/Branding Guidelines button/badge stating that the guidelines were created by GitHub, not the Atom Community. The notice reads: "Please note that the branding guidelines accessible through the following link are the official branding guidelines for GitHub, and not a branding guideline created by the Atom Community."

This is my first pull request here in a while, so any feedback or guidance is appreciated. Thank you for considering this contribution.

(The text above was generated by ChatGPT bcz it sorta makes lives easier. The notice too, only a bit was removed)

Release Notes

N/A (this is not even Atom anyway)

[ghost]

Hi reviewers,

Just a heads up that the commit message command to skip the CI/checks was not successful on this pull request. However, the changes might still be mergeable if the checks pass. Let's wait and see.