doc: Reformat RST content for Sphinx rendering

Some existing RST files contain formatting errors that will cause
Sphinx to generate warnings.

Change-Id: I714136d1ea5b645eaa55dd304fb56d5b5fd18ee1
Signed-off-by: Paul Beesley <paul.beesley@arm.com>
diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 2e6f7ba..41d0ba7 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -1,10 +1,5 @@
-Trusted Firmware-A Tests - User Guide
-=====================================
-
-.. section-numbering::
-    :suffix: .
-
-.. contents::
+User Guide
+==========
 
 This document describes how to build the Trusted Firmware-A Tests (TF-A Tests)
 and run them on a set of platforms. It assumes that the reader has previous