Fix formattings and adjust main title

Change-Id: I1ea3192e818ca3a78561c11b80e4051927b07db9
Issue-ID: INT-1893
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
diff --git a/docs/TestingGuide.rst b/docs/TestingGuide.rst
index 3a3aefd..06bdc5b 100644
--- a/docs/TestingGuide.rst
+++ b/docs/TestingGuide.rst
@@ -1,9 +1,9 @@
 .. This work is licensed under a Creative Commons Attribution 4.0 International License.
 .. http://creativecommons.org/licenses/by/4.0
-.. Copyright 2019 Samsung Electronics Co., Ltd.
+.. Copyright 2021 Samsung Electronics Co., Ltd.
 
-OOM ONAP Offline Installer Testing Guide
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Offline Installer Testing Guide
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This testing guide describes how offline installer can be tested in local
 development environment (laptop) without the need for actual servers.
@@ -91,6 +91,7 @@
 configuration between.
 
 Single scenario example with nexus role
+
 ::
 
     ├── infrastructure.yml
@@ -108,6 +109,7 @@
     │   │   └── vars
 
 Multiple scenario example with chrony role
+
 ::
 
     roles/chrony
@@ -197,6 +199,7 @@
   to leave them out.
 
 Example with infrastructure playbook level test files
+
 ::
 
     ├── infrastructure.yml
@@ -265,6 +268,7 @@
     <action>-<role>[-<description>]
 
 Examples of commonly used test roles
+
 ::
 
     ├── infrastructure.yml
@@ -292,6 +296,7 @@
 should be used in cases where ansible's 'systemd' module is used.
 
 Used Dockerfiles/Box definitions are kept in following directory structure
+
 ::
 
     └── test