[FFmpeg-cvslog] doc/filters: add missing '' for blend example

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun Sep  3 20:00:53 2017 +0200| [8b193e553055f7c89f6a8263ebdc2e6756af7fb1] | committer: Paul B Mahol

doc/filters: add missing '' for blend example

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8b193e553055f7c89f6a8263ebdc2e6756af7fb1
---

 doc/filters.texi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index 710294860e..649e101876 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -5027,7 +5027,7 @@ blend=all_expr='if(gte(T*SH*40+Y,H)*gte((T*40*SW+X)*W/H,W),A,B)'
 @item
 Split diagonally video and shows top and bottom layer on each side:
 @example
-blend=all_expr=if(gt(X,Y*(W/H)),A,B)
+blend=all_expr='if(gt(X,Y*(W/H)),A,B)'
 @end example
 
 @item