QA : add new tools
Ubuntu 18.04
- w3c-linkchecker ----> commande checklink
- linkchecker
- linkchecker-gui
- linkchecker-web
sudo apt-get install w3c-linkchecker
checklink https://faq-dev.adullact.org/
Ubuntu 20.04
- w3c-linkchecker
see also : https://gitlab.com/asqatasun/documentation/-/issues/7