Polish "Grafana Dashboard" section

[izeye]

This PR adds a note for a link to the GitHub repository for the Prometheus Grafana dashboard.

By the way, while working on this, the "Grafana Dashboard" section seems to contain a copy from the contents in the Grafana dashboard page, which is easy to get out of sync and is actually out of sync a bit already.

It might be better to remove the contents and have a link to the Grafana dashboard page only. Or if the GitHub repository has a proper README file later, it would be better to link to the README instead.

See gh-5661

/cc @mweirauch

[jonatan-ivanov]

What do you think about deleting the whole section and doing something like this instead (probably on 1.12.x):

Grafana Dashboard

There are many third-party Grafana dashboards publicly available on GrafanaHub, see an example here.

NOTE: The dashboards are maintained by the community in their external GitHub repositories, so if you have an issue, it should be created in their respective GitHub repository.

[izeye]

@jonatan-ivanov Thanks for the feedback!

I updated as you suggested.

[izeye]

@mweirauch https://grafana.com/grafana/dashboards/4701-jvm-micrometer/ doesn't seem to have a link to the GitHub repo, so you might want to add one.

[mweirauch]

@mweirauch https://grafana.com/grafana/dashboards/4701-jvm-micrometer/ doesn't seem to have a link to the GitHub repo, so you might want to add one.

@izeye Yes, I didn't come around to do it, yet. Thanks for the heads-up!

[mweirauch]

@izeye The README over at grafana.com has been updated. Actually took some hours for the change to take effect.