media: Documentation: userspace-api/media: dvb/dmx-qbuf: drop doubled word

Drop the doubled word "the".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/userspace-api/media/dvb/dmx-qbuf.rst

@@ -50,7 +50,7 @@ by a :ref:`DMX_QUERYBUF` ioctl will do as well.
 When ``DMX_QBUF`` is called with a pointer to this structure, it locks the
 memory pages of the buffer in physical memory, so they cannot be swapped
 out to disk. Buffers remain locked until dequeued, until the
-the device is closed.
+device is closed.
 
 Applications call the ``DMX_DQBUF`` ioctl to dequeue a filled
 (capturing) buffer from the driver's outgoing queue.