index correction

the underline of the title was too short

Issue-ID: CLAMP-396

Change-Id: I893b9baa81065f20d5a9d5042f8d4682363d019c
Signed-off-by: osgn422w <gervais-martial.ngueko@intl.att.com>
diff --git a/docs/index.rst b/docs/index.rst
index 61e49c6..1f41485 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -3,7 +3,7 @@
 .. Copyright (c) 2017-2019 AT&T Intellectual Property. All rights reserved.
 
 CLAMP - Control Loop Automation Management Platform
-==================================================
+===================================================
 .. High level architecture, design, and packaging information for release planning and delivery.
 
 .. include:: architecture.rst