Fix

Author: javiereguiluz

reference/constraints/Video.rst

@@ -312,7 +312,8 @@ The message displayed if the video uses a codec that is not in the ``allowedCode
 
 **type**: ``string`` **default**: ``Unsupported video container "{{ container }}".``
 
-The message displayed if the video uses a container format that is not in the ``allowe
+The message displayed if the video uses a container format that is not in the
+``allowedContainers`` list.
 
 .. _`FFmpeg package`: https://ffmpeg.org/
 .. _`video codecs`: https://en.wikipedia.org/wiki/Comparison_of_video_codecs