Change file doxy from

"video format and noformat filters" to
"format and noformat video filters", 
as suggested by Diego.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@20442 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavfilter/vf_format.c

@@ -20,7 +20,7 @@
 
 /**
  * @file libavfilter/vf_format.c
- * video format and noformat filters
+ * format and noformat video filters
  */
 
 #include "avfilter.h"