doc: add missing public access modifier.
doc: add missing public access modifier.

Signed-off-by: Squareys <0f6a03d4883e012ba4cb2c581a68f35544703cd6@googlemail.com>

DerThorsten/magnum,DerThorsten/magnum,MiUishadow/magnum,DerThorsten/magnum,MiUishadow/magnum,DerThorsten/magnum,DerThorsten/magnum,MiUishadow/magnum,ashimidashajia/magnum,ashimidashajia/magnum,MiUishadow/magnum,MiUishadow/magnum,ashimidashajia/magnum,MiUishadow/magnum,ashimidashajia/magnum,ashimidashajia/magnum