Tracing: Add links to documentation in config pages

[joey-grafana]

What is this feature?

Adds a link to each section in the data sources config editor.

Why do we need this feature?

Allows users to easily link directly to documentation that describes the config section in more detail.

Who is this feature for?

Tracing users (Tempo/Jaeger/Zipkin).

Special notes for your reviewer:

Adds a button link in each settings section like the following:

Please check that:

• It works as expected from a user's perspective.
• If this is a pre-GA feature, it is behind a feature toggle.
• The docs are updated, and if this is a notable improvement, it's added to our What's New doc.

[github-actions]

Backend code coverage report for PR #66442
No changes

[github-actions]

Frontend code coverage report for PR #66442

Plugin	Main	PR	Difference
explore	86.51%	86.52%	.01%

[adrapereira]

LGTM! 🚀

[knylander-grafana]

@joey-grafana Is there a way to list the links that are used in product links? I'll ask this question in the Slack channel. If a target link changes, how can we check for broken links?

[joey-grafana]

Hey Kim, sorry I pushed this before your review!

I'm not sure if there's a way to check for broken links, do we have a policy around this or do it anywhere else?

[knylander-grafana]

When you use make docs, it can check for broken links but that's only within the doc set. The website team provides a report of broken links to the doc team, but again that's not going to check for links in the product that go to docs. Let me ask @jdbaldry for some guidance here.

[jdbaldry]

#66440 will facilitate checking for broken links across projects. I won't be enforcing checks in CI until this has been tested out a bit but I would encourage all technical writers to start using cross project relrefs and checking them with the script.

As for checking in product links, we don't have anything in place for this yet. You could use existing link checking tools or write a script that derives the grafana.com URLs from the project docs/sources directories that could be used to check against. I guess you could also script something that starts the make docs webserver and then checks the links against that?