duniterpy#169: Update pre-commit doc. Document CI linter hook usage
Give the choices to install pre-commit via the distrib or via pip
Gitlab was upgraded to latest version (v18.3.1), please report issues to https://forum.duniter.org/t/interventions-et-indisponibilite-des-forums-et-de-gitlab/7131/298
Give the choices to install pre-commit via the distrib or via pip