The DVB documentation is using DTV.dmx for all demux symbols.

Use such domain for kernel-doc documentation.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/userspace-api/media/dvb/dmx_types.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/userspace-api/media/dvb/dmx_types.rst b/Documentation/userspace-api/media/dvb/dmx_types.rst
index 33458fbb84ab..dd76010696c8 100644
--- a/Documentation/userspace-api/media/dvb/dmx_types.rst
+++ b/Documentation/userspace-api/media/dvb/dmx_types.rst
@@ -1,4 +1,5 @@
 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: DTV.dmx
 
 .. _dmx_types:
 
-- 
2.51.0