Documentation command, fix name and tooltip

Fix the name and tooltip and choose between:

• Home/Maison
• Welcome/Accueil
• Documentation

(from redmine: issue id 3550, created on 2023/12/18 by Matthieu Decorde)

added Commands type::bug + 1 deleted label

changed milestone to %TXM 0.8.3

closed

removed 1 deleted label

assigned to @mdecorde