What docs and example configs ar most actual?

Hi, i found several sources für docs and example configs/syntax:

Which of them should i use with the actual stable version (debian buster)?

Most of the links from the first were moved to the handbook, which is the third link. The second is just the source code for the third.
https://jitsi.org/qi is what you need (from the handbook).

So DevOps Guide (scalable setup) · Jitsi Meet Handbook should do it?
But where are the " (see the files in example-config-files/scalable )" then?
And if they are at jitsi-meet/doc/example-config-files/scalable at master · jitsi/jitsi-meet · GitHub,
how about the org.jitsi.videobridge.DISABLE_TCP_HARVESTER=true
entry if i use my own coturn at the server of the main vb?