Tweak information regarding the GitHub GPG key

[jernej-9]

Why:

Following the discussion #6444 I had with @felicitymay, this pull request includes changes to information regarding GPG verification that have been discussed in that thread.

What's being changed:

The paragraph with information on GitHub's key that is used to sign web commits has been slightly rearranged to improve readability, and the full fingerprint of the key has been added, which enables everybody to directly verify that the key they downloaded is indeed correct.

Check off the following:

• I have reviewed my changes in staging (look for the deploy-to-heroku link in your pull request, then click View deployment).
• For content changes, I have completed the self-review checklist.

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I think that for security reasons, before merging in this pull request, it is necessary that at least one, but preferably more GitHub employees check the key fingerprint and explicitly write an approval in this pull request stating that the fingerprint is indeed correct.

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[felicitymay]

Hi again @jernej-9, many thanks for the PR ✨

I think that for security reasons, before merging in this pull request, it is necessary that at least one, but preferably more GitHub employees check the key fingerprint and explicitly write an approval in this pull request stating that the fingerprint is indeed correct.

Thanks for reminding us about this - it's a great point. I'll check on the right people to look at this PR.

[felicitymay]

You can see a preview of the updated file here: https://docs-6615--tweak-gpg-info.herokuapp.com/en/github/authenticating-to-github/managing-commit-signature-verification/about-commit-signature-verification#about-commit-signature-verification.

[felicitymay]

Hi - sorry for the delay in getting back to you. The engineering team has verified that the fingerprint that you've included is correct.

I'm going to update this PR from main and merge your improvements to the article. Thanks for your help ✨

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