doc/filters: Update commands doc for amix

commit 95b854dd06 "rename sum option to normalize" missed command
part docs

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
Reviewed-by: Gyan Doshi <ffmpeg@gyani.pro>
This commit is contained in:
Jun Zhao 2021-04-10 15:45:13 +08:00
parent 2899fb61d2
commit d5e575ef6a

View File

@ -1947,7 +1947,7 @@ by this filter if this option is disabled. By default is enabled.
This filter supports the following commands:
@table @option
@item weights
@item sum
@item normalize
Syntax is same as option with same name.
@end table