[media] v4l: DocBook: fix version number typo

Signed-off-by: Nicolas Thery <nicolas.thery@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Documentation/DocBook/media/v4l/compat.xml

@@ -2460,7 +2460,7 @@ that used it. It was originally scheduled for removal in 2.6.35.
     </section>
 
     <section>
-      <title>V4L2 in Linux 3.5</title>
+      <title>V4L2 in Linux 3.6</title>
       <orderedlist>
 	<listitem>
 	  <para>Replaced <structfield>input</structfield> in