[media] DocBook: fix xref to the FE open() function

Instead of going to the V4L2 open(), use the xref to the
proper place at the frontend ioctls that were already
reformatted.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/Documentation/DocBook/media/dvb/frontend_read_status.xml b/Documentation/DocBook/media/dvb/frontend_read_status.xml
index f2d08b6..9c1810a 100644
--- a/Documentation/DocBook/media/dvb/frontend_read_status.xml
+++ b/Documentation/DocBook/media/dvb/frontend_read_status.xml
@@ -27,7 +27,7 @@
       <varlistentry>
 	<term><parameter>fd</parameter></term>
 	<listitem>
-	  <para>&fd;</para>
+	  <para>&fe_fd;</para>
 	</listitem>
       </varlistentry>
       <varlistentry>