the postgr.es/m/MESSAGE_ID URL format

Hello,

Is there a page somewhere on the postgres wiki with a simple high-level
explanation of what the https://postgr.es/m/MESSAGE_ID URL format is
and how to construct one of these URLs?

For example, can this be used for all postgres mailing lists or only
certain lists (like hackers)?

It's probably a two sentence thing, but with some basic searching I
couldn't find a wiki page with those two sentences

It is referenced here for commit messages
https://wiki.postgresql.org/wiki/Commit_Message_Guidance

I also find it useful for mailing list messages

-Jeremy