[media] Fix 'ID nv12mt already defined' error

DocBook validation fix.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/Documentation/DocBook/v4l/pixfmt-nv12mt.xml b/Documentation/DocBook/v4l/pixfmt-nv12mt.xml
index 5cb5bec..7a2855a 100644 (file)
--- a/Documentation/DocBook/v4l/pixfmt-nv12mt.xml
+++ b/Documentation/DocBook/v4l/pixfmt-nv12mt.xml
@@ -49,7 +49,7 @@ interleaved. Height of the buffer is aligned to 32.
          <title>Memory layout of macroblocks in <constant>V4L2_PIX_FMT_NV12
 </constant> format pixel image - extreme case</title>
        <para>
-       <figure id="nv12mt">
+       <figure id="nv12mt_ex">
            <title>Example <constant>V4L2_PIX_FMT_NV12MT</constant> memory
 layout of macroblocks</title>
            <mediaobject>