docs: add links to issues missing labels

[rarkins]

Changes:

Adds links to searches which can be used to find issues missing required labels.

Context:

N/A

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please tick one)

I have verified these changes via:

• Code inspection only, or
• Newly added unit tests, or
• No new tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[HonkingGoose]

Looks good to me, but I'm not 100% sure if this is actually working properly.

Do we have a way to verify that this works?

[HonkingGoose]

Also I found this search string: https://github.com/renovatebot/renovate/issues?q=is%3Aopen+is%3Aissue+no%3Alabel

It will show any issues that do not have any labels at all.
Do you want to put that in the docs as well?

[rarkins]

I think I cleaned up all the issues in these links. Don't think we need to link to ones without label at all as they'll be caught by the status search

[HonkingGoose]

I think we're good to go then. 😄

[renovate-release]

🎉 This PR is included in version 24.42.2 🎉

The release is available on:

• GitHub release
• 24.42.2

Your semantic-release bot 📦🚀