docs: Correct the MediaRenderer docs.
docs: Correct the MediaRenderer docs.

They were a bad copy/paste of the MediaServer docs.

jku/rygel,GNOME/rygel,GNOME/rygel,jku/rygel,Pelagicore/Media-Manager-Rygel-patched,Tarnyko/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,Pelagicore/Media-Manager-Rygel-patched,Tarnyko/rygel