yunohost-changer-label-application

# passer en mode su
sudo -s
# lister les applications (installed=true)  
yunohost app list

[...]
    description: App vide sans accès FTP
    id: multi_webapp
    installed: True
    label: Shaarli
    license: free
    name: Multi custom webapp
[...]

# on change le label
yunohost app setting multi_webapp label -v "Shaarli"
# actualisation
yunohost app ssowatconf && nginx -s reload