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-g-ctrl.rst b/Documentation/linux_tv/media/v4l/vidioc-g-ctrl.rst
index 6381d7c..6b2b157 100644
--- a/Documentation/linux_tv/media/v4l/vidioc-g-ctrl.rst
+++ b/Documentation/linux_tv/media/v4l/vidioc-g-ctrl.rst
@@ -1,6 +1,6 @@
 .. -*- coding: utf-8; mode: rst -*-
 
-.. _vidioc-g-ctrl:
+.. _VIDIOC_G_CTRL:
 
 **********************************
 ioctl VIDIOC_G_CTRL, VIDIOC_S_CTRL
@@ -48,9 +48,9 @@
 EINVAL error code is returned as well.
 
 These ioctls work only with user controls. For other control classes the
-:ref:`VIDIOC_G_EXT_CTRLS <vidioc-g-ext-ctrls>`,
-:ref:`VIDIOC_S_EXT_CTRLS <vidioc-g-ext-ctrls>` or
-:ref:`VIDIOC_TRY_EXT_CTRLS <vidioc-g-ext-ctrls>` must be used.
+:ref:`VIDIOC_G_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>`,
+:ref:`VIDIOC_S_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` or
+:ref:`VIDIOC_TRY_EXT_CTRLS <VIDIOC_G_EXT_CTRLS>` must be used.
 
 
 .. _v4l2-control:
@@ -90,7 +90,7 @@
     The struct :ref:`v4l2_control <v4l2-control>` ``id`` is invalid
     or the ``value`` is inappropriate for the given control (i.e. if a
     menu item is selected that is not supported by the driver according
-    to :ref:`VIDIOC_QUERYMENU <vidioc-queryctrl>`).
+    to :ref:`VIDIOC_QUERYMENU <VIDIOC_QUERYCTRL>`).
 
 ERANGE
     The struct :ref:`v4l2_control <v4l2-control>` ``value`` is out of