Update the doc link to the rtp draft as well.
Update the doc link to the rtp draft as well.

svn path=/trunk/vorbis/; revision=13221

ksophocleous/vorbis,youfearm3/vorbis,ksophocleous/vorbis,ShiftMediaProject/vorbis,erikd/vorbis,felipebetancur/vorbis,youfearm3/vorbis,ShiftMediaProject/vorbis,mwgoldsmith/vorbis,emscripten-ports/Vorbis,ksophocleous/vorbis,youfearm3/vorbis,nicolaichuk/vorbis,erikd/vorbis,mwgoldsmith/vorbis,mwgoldsmith/vorbis,emscripten-ports/Vorbis,eidy/vorbis,ShiftMediaProject/vorbis,nicolaichuk/vorbis,ShiftMediaProject/vorbis,mwgoldsmith/vorbis,felipebetancur/vorbis,felipebetancur/vorbis,nicolaichuk/vorbis,ksophocleous/vorbis,nicolaichuk/vorbis,erikd/vorbis,emscripten-ports/Vorbis,eidy/vorbis,erikd/vorbis,eidy/vorbis,emscripten-ports/Vorbis,ShiftMediaProject/vorbis,youfearm3/vorbis,ShiftMediaProject/vorbis,eidy/vorbis,felipebetancur/vorbis