When using the fr-be-azerty remote keyboard layout on an RDP connection,
the dash ('-') and underscore ('_') are swapped.
Underscore and dash are located on the same key on a Belgian azerty
layout. Dash should be the normal/unshifted character, and underscore
should be the shifted character. The current mapping has this the other
way around, so let's fix this.
Signed-off-by: Sander Vanheule <Sander.Vanheule@UGent.be>