Add totalcompute readme file and links

Signed-off-by: Avinash Mehta <avinash.mehta@arm.com>
Change-Id: I6576457462b970d62174b8cf62c87beafd2a864d

docs/totalcompute/readme.rst

+.. _docs/totalcompute/readme:
+Total Compute Platform Software!
+================================
+
+Total Compute is an approach to moving beyond optimizing individual IP to take a system-level solution view of the SoC that puts use cases and experiences at the heart of the designs.
+
+Total Compute focuses on optimizing Performance, Security, and Developer Access across Arm’s IP, software, and tools. This means higher-performing, more immersive, and more secure experiences on devices coupled with an easier app and software development process.
+
+TC0
+
+- :ref:`change-log <docs/totalcompute/tc0/change-log>`
+- :ref:`release_notes <docs/totalcompute/tc0/release_notes>`
+- :ref:`user-guide <docs/totalcompute/tc0/user-guide>`
+

docs/totalcompute/tc0/change-log.rst

+.. _docs/totalcompute/tc0/change-log:
 Change Log
 ==========
 
+.. contents::
+
 This document contains a summary of the new features, changes and
 fixes in each release of TC0 software stack.
 

docs/totalcompute/tc0/release_notes.rst

@@ -2,9 +2,6 @@
 Release notes - 2021.07.31
 ==========================
 
-.. section-numbering::
-    :suffix: .
-
 .. contents::
 
 Release tag

docs/totalcompute/tc0/user-guide.rst

+.. _docs/totalcompute/tc0/user-guide:
 User Guide
 ==========
 
-.. section-numbering::
-    :suffix: .
-
 .. contents::