MAINTAINERS: add myself as vf_dejudder.c maintainer

Signed-off-by: Nicholas Robbins <nickrobbins@yahoo.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

MAINTAINERS

@@ -336,6 +336,7 @@ Filters:
   avf_avectorscope.c                    Paul B Mahol
   vf_blend.c                            Paul B Mahol
   vf_colorbalance.c                     Paul B Mahol
+  vf_dejudder.c                         Nicholas Robbins
   vf_delogo.c                           Jean Delvare (CC <khali@linux-fr.org>)
   vf_drawbox.c/drawgrid                 Andrey Utkin
   vf_extractplanes.c                    Paul B Mahol