Automatically verify links in OTel README file

[andrzej-stencel]

          it looks good, i was wondering if we should do some kind of validation to check remote part exists, but this could be problematic in CI in case if there are traffic filters.

Originally posted by @michalpristas in #5087 (review)

The OTel README file has links to components that are created automatically by the mage otel:readme command. We should have a tool to automatically check that the links are valid (point to something that exists).

We could use https://github.com/tcort/markdown-link-check/ or similar solution for this.

[ycombinator]

The OTel README file has links to components that are created automatically by the mage otel:readme command. We should have a tool to automatically check that the links are valid (point to something that exists).

Would it make sense for mage otel:readme to itself to perform this check before it creates the links? Additionally, it might be good for mage check to perform the same check as well, in case links that used to work at creation time have since stopped working for some reason.

[mauri870]

A pure Go alternative that we can use is https://github.com/rednafi/link-patrol.