How to use --doctool?

Godot Version

Godot 4.4

Question

I would like to know how to use the --doctool command, as far as I understand it is needed for the correct assembly of XML documentation in godot, if I am wrong correct me, it will be useful for me to know. Now I am writing various PRs, but due to CI errors my PRs do not reach the release, I noticed that some use a special exe file for this