doc/filters: re-order hdcd options to match --help filter=hdcd

Signed-off-by: Burt P <pburt0@gmail.com>

doc/filters.texi

@@ -2652,13 +2652,13 @@ ffmpeg -i HDCD16.wav -af hdcd -acodec pcm_s24le OUT24.wav
 The filter accepts the following options:
 
 @table @option
+@item disable_autoconvert
+Disable any automatic format conversion or resampling in the filter graph.
+
 @item process_stereo
 Process the stereo channels together. If target_gain does not match between
 channels, consider it invalid and use the last valid target_gain.
 
-@item disable_autoconvert
-Disable any automatic format conversion or resampling in the filter graph.
-
 @item cdt_ms
 Set the code detect timer period in ms.