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-g-modulator.rst b/Documentation/linux_tv/media/v4l/vidioc-g-modulator.rst
index 21b9fea..05d8361 100644
--- a/Documentation/linux_tv/media/v4l/vidioc-g-modulator.rst
+++ b/Documentation/linux_tv/media/v4l/vidioc-g-modulator.rst
@@ -6,12 +6,13 @@
 ioctl VIDIOC_G_MODULATOR, VIDIOC_S_MODULATOR
 ********************************************
 
-NAME
+Name
 ====
 
 VIDIOC_G_MODULATOR - VIDIOC_S_MODULATOR - Get or set modulator attributes
 
-SYNOPSIS
+
+Synopsis
 ========
 
 .. cpp:function:: int ioctl( int fd, int request, struct v4l2_modulator *argp )
@@ -19,7 +20,7 @@
 .. cpp:function:: int ioctl( int fd, int request, const struct v4l2_modulator *argp )
 
 
-ARGUMENTS
+Arguments
 =========
 
 ``fd``
@@ -31,7 +32,7 @@
 ``argp``
 
 
-DESCRIPTION
+Description
 ===========
 
 To query the attributes of a modulator applications initialize the
@@ -242,7 +243,7 @@
        -  Enable the RDS encoder for a radio FM transmitter.
 
 
-RETURN VALUE
+Return Value
 ============
 
 On success 0 is returned, on error -1 and the ``errno`` variable is set