palettegen, paletteuse filter dose not add new options at documentation

[nicol]

Summary of the bug: palettegen, paletteuse filter dose not add new options at documentation.
How to reproduce:

https://ffmpeg.org/ffmpeg-filters.html#palettegen-1
% ffmpeg -h filter=palettegen
  stats_mode
	  single                       ..FV.... compute new histogram for each frame

https://ffmpeg.org/ffmpeg-filters.html#paletteuse
% ffmpeg -h filter=paletteuse
  debug_kdtree      <string>     ..FV.... save Graphviz graph of the kdtree in specified file
  color_search      <int>        ..FV.... set reverse colormap color search method (from 0 to 2) (default nns_iterative)
     nns_iterative                ..FV.... iterative search
     nns_recursive                ..FV.... recursive search
     bruteforce                   ..FV.... brute-force into the palette
  mean_err          <boolean>    ..FV.... compute and print mean error (default false)
  debug_accuracy    <boolean>    ..FV.... test color search accuracy (default false)
  new               <boolean>    ..FV.... take new palette for each output frame (default false)

ffmpeg version N-81592-g2793ebd
built on ... zeranoe

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

[llogan]

Fixed in 915abab25c5b28a23767029713bb175c63be7cc7.