doc-rst: linux_tv: Replace reference names to match ioctls

Due to a limitation at the DocBook language, the references
were using lowercase and slashes, instead of the name of the
ioctls. On ReST, make them identical. This will hopefully
help to cleanup the code a little bit.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/linux_tv/media/v4l/vidioc-queryctrl.rst b/Documentation/linux_tv/media/v4l/vidioc-queryctrl.rst
index 116b69c..7d38a51 100644
--- a/Documentation/linux_tv/media/v4l/vidioc-queryctrl.rst
+++ b/Documentation/linux_tv/media/v4l/vidioc-queryctrl.rst
@@ -1,6 +1,6 @@
 .. -*- coding: utf-8; mode: rst -*-
 
-.. _vidioc-queryctrl:
+.. _VIDIOC_QUERYCTRL:
 
 ***************************************************************
 ioctl VIDIOC_QUERYCTRL, VIDIOC_QUERY_EXT_CTRL, VIDIOC_QUERYMENU
@@ -566,10 +566,10 @@
           the string must be (minimum + N * step) characters long for N ≥ 0.
           These lengths do not include the terminating zero, so in order to
           pass a string of length 8 to
-          :ref:`VIDIOC_S_EXT_CTRLS <vidioc-g-ext-ctrls>` you need to
+          :ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` you need to
           set the ``size`` field of struct
           :ref:`v4l2_ext_control <v4l2-ext-control>` to 9. For
-          :ref:`VIDIOC_G_EXT_CTRLS <vidioc-g-ext-ctrls>` you can set
+          :ref:`VIDIOC_G_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` you can set
           the ``size`` field to ``maximum`` + 1. Which character encoding is
           used will depend on the string control itself and should be part
           of the control documentation.