media: buffer.rst: fix link text of VIDIOC_QBUF

The link was showing both VIDIOC_QBUF, VIDIOC_DQBUF while it should show
only VIDIOC_QBUF in this case.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/v4l/buffer.rst

@@ -13,7 +13,7 @@ Only pointers to buffers (planes) are exchanged, the data itself is not
 copied. These pointers, together with meta-information like timestamps
 or field parity, are stored in a struct :c:type:`v4l2_buffer`,
 argument to the :ref:`VIDIOC_QUERYBUF`,
-:ref:`VIDIOC_QBUF` and
+:ref:`VIDIOC_QBUF <VIDIOC_QBUF>` and
 :ref:`VIDIOC_DQBUF <VIDIOC_QBUF>` ioctl. In the multi-planar API,
 some plane-specific members of struct :c:type:`v4l2_buffer`,
 such as pointers and sizes for each plane, are stored in struct