check menu item: Fix a typo
check menu item: Fix a typo

It is check, not checl. Pointed out by Giovanni Campagna in
https://bugzilla.gnome.org/show_bug.cgi?id=757968

grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita