lib/remote: Minor fix to flatpak_remote_get_disabled() docs
lib/remote: Minor fix to flatpak_remote_get_disabled() docs

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #1709
Approved by: mwleeds

flatpak/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak