Wrong command in the screenlocker documentation

a user signaled that in https://tails.boum.org/doc/first_steps/introduction_to_gnome_and_the_tails_desktop/#screen-locker, we advise the users to disable the screen-locker with this command :

gsettings org.gnome.desktop.screensaver lock-enabled false

that should be

gsettings set org.gnome.desktop.screensaver lock-enabled false

Related issues

• Blocks #15941 (closed)

Original created by @goupille on 16530 (Redmine)