fixes the following warning:
** too much @tab (multitable has only 4 column(s)) (l. 443)
Originally committed as revision 15729 to svn://svn.ffmpeg.org/ffmpeg/trunk
@section Audio Codecs
-@multitable @columnfractions .4 .1 .1 .1 .7
+@multitable @columnfractions .4 .1 .1 .4
@item Name @tab Encoding @tab Decoding @tab Comments
@item 4X IMA ADPCM @tab @tab X
@item 8SVX audio @tab @tab X
@section Subtitle Formats
-@multitable @columnfractions .4 .1 .1 .4
+@multitable @columnfractions .4 .1 .1 .1 .1 .1
@item Name @tab Muxing @tab Demuxing @tab Encoding @tab Decoding @tab Rendering
@item ASS/SSA @tab X @tab X
@item DVB @tab X @tab X @tab X @tab X @tab X