doc-rst: linux_tv: don't use uppercases for syscall sections

On the syscall conversions, we used uppercase for the sections,
but this is too bold. So, convert them to Camel Case, as it
looks visually better.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/linux_tv/media/v4l/vidioc-dqevent.rst b/Documentation/linux_tv/media/v4l/vidioc-dqevent.rst
index 850cb5e..73c0d5b 100644
--- a/Documentation/linux_tv/media/v4l/vidioc-dqevent.rst
+++ b/Documentation/linux_tv/media/v4l/vidioc-dqevent.rst
@@ -6,18 +6,19 @@
 ioctl VIDIOC_DQEVENT
 ********************
 
-NAME
+Name
 ====
 
 VIDIOC_DQEVENT - Dequeue event
 
-SYNOPSIS
+
+Synopsis
 ========
 
 .. cpp:function:: int ioctl( int fd, int request, struct v4l2_event *argp )
 
 
-ARGUMENTS
+Arguments
 =========
 
 ``fd``
@@ -29,7 +30,7 @@
 ``argp``
 
 
-DESCRIPTION
+Description
 ===========
 
 Dequeue an event from a video device. No input is required for this
@@ -564,7 +565,7 @@
 	  decoder.
 
 
-RETURN VALUE
+Return Value
 ============
 
 On success 0 is returned, on error -1 and the ``errno`` variable is set