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/dvb/dmx-remove-pid.rst b/Documentation/linux_tv/media/dvb/dmx-remove-pid.rst
index 859e1a1..ed1a49c 100644
--- a/Documentation/linux_tv/media/dvb/dmx-remove-pid.rst
+++ b/Documentation/linux_tv/media/dvb/dmx-remove-pid.rst
@@ -6,18 +6,19 @@
 DMX_REMOVE_PID
 ==============
 
-NAME
+Name
 ----
 
 DMX_REMOVE_PID
 
-SYNOPSIS
+
+Synopsis
 --------
 
 .. c:function:: int ioctl(fd, int request = DMX_REMOVE_PID, __u16 *)
 
 
-ARGUMENTS
+Arguments
 ---------
 
 .. flat-table::
@@ -44,7 +45,7 @@
        -  PID of the PES filter to be removed.
 
 
-DESCRIPTION
+Description
 -----------
 
 This ioctl call allows to remove a PID when multiple PIDs are set on a
@@ -53,7 +54,7 @@
 DMX_SET_PES_FILTER or DMX_ADD_PID.
 
 
-RETURN VALUE
+Return Value
 ------------
 
 On success 0 is returned, on error -1 and the ``errno`` variable is set