Rename mpeg4 into MPEG-4, mpeg2ts into MPEG-2 TS and h264 into H.264

[kdenlive] / AUTHORS

Jean-Baptiste Mardelle <jb@kdenlive.org> : main developer and maintainer
Marco Gittler <g.marco@freenet.de> : MLT effects, timeline, audio thumbs
Jean-Michel Pouré <jm@poure.com> : rendering profiles customisation
Jason Wood <jasonwood@blueyonder.co.uk> : original KDE3 version author (not active anymore)