Bring attention to `git config tag.gpgsign true` for parity with auto-signing commits

[ara303]

Code of Conduct

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What article on docs.github.com is affected?

https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-tags

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

At the beginning of Signing commits, a "Tip" is present suggesting to set commit.gpgsign true by default.

No equivalent exists on Signing tags.

That can be fixed by taking the "Tip" from the article on commits, changing the language a little bit to tag.gpgsign true, and adding it as a "Tip" to the article on tags too.

It would make it easier for people to enable signing enabled for both commits and tags by default.

Additional information

I've created a PR for how I think it should be fixed (copies the wording from the commit article, changing "tag" in lieu of "commit"), but the PR template asks for an issue first.

[Sharra-writes]

@ara303 This is something I would need to check in about, but you're linking me to a commit, not your PR, and I can't find your PR in our repository. Could you link me to your PR?