doc: better info about debug/release plugin dirs.
doc: better info about debug/release plugin dirs.

Someone should already tell me that all my writing sucks and the
documentation is incomprehensible wall of text. Thanks in advance.

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