Sync Sphinx requirement
1. Sync sphinx dependency with global requirements. It caps python 2 since
sphinx 2.0 no longer supports Python 2.7.
2. Update some URLs to latest
3. Remove unncessary "=="
Change-Id: Iff24e8d5082d8ef8dc2d29ea92288bf418f5500d
diff --git a/README.rst b/README.rst
index d7ab3a1..f42d0eb 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,6 @@
-===============================================
+==============================
Tempest Integration for Cinder
-===============================================
+==============================
This directory contains additional Cinder tempest tests.