[media] docs-rst exceptions: use C domain references for DVB headers

Now that we moved away from the :ref: type of references,
we need to update the exceptions lists.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/net.h.rst.exceptions

@@ -7,5 +7,5 @@ ignore ioctl __NET_GET_IF_OLD
 ignore struct __dvb_net_if_old
 
 # Macros used at struct dvb_net_if
-replace define DVB_NET_FEEDTYPE_MPE dvb-net-if
-replace define DVB_NET_FEEDTYPE_ULE dvb-net-if
+replace define DVB_NET_FEEDTYPE_MPE :c:type:`dvb_net_if`
+replace define DVB_NET_FEEDTYPE_ULE :c:type:`dvb_net_if`