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/mediactl/media-ioc-enum-entities.rst b/Documentation/linux_tv/media/mediactl/media-ioc-enum-entities.rst
index 5d11572..f11c45a 100644
--- a/Documentation/linux_tv/media/mediactl/media-ioc-enum-entities.rst
+++ b/Documentation/linux_tv/media/mediactl/media-ioc-enum-entities.rst
@@ -6,18 +6,19 @@
 ioctl MEDIA_IOC_ENUM_ENTITIES
 *****************************
 
-NAME
+Name
 ====
 
 MEDIA_IOC_ENUM_ENTITIES - Enumerate entities and their properties
 
-SYNOPSIS
+
+Synopsis
 ========
 
 .. cpp:function:: int ioctl( int fd, int request, struct media_entity_desc *argp )
 
 
-ARGUMENTS
+Arguments
 =========
 
 ``fd``
@@ -29,7 +30,7 @@
 ``argp``
 
 
-DESCRIPTION
+Description
 ===========
 
 To query the attributes of an entity, applications set the id field of a
@@ -183,7 +184,7 @@
        -
 
 
-RETURN VALUE
+Return Value
 ============
 
 On success 0 is returned, on error -1 and the ``errno`` variable is set