Fix URL for release notes in docs

Release notes in docs is not published by reno.
This patch change Release notes to URL published by reno.

Change-Id: I020abc16828592957496e83f74519ae919a7bb34

README.rst

@@ -1,8 +1,8 @@
-===============================
-magnum-ui
-===============================
+=========
+Magnum-UI
+=========
 
-Magnum Dashboard
+Horizon plugin for Magnum
 
 * Free software: Apache license
 * Source: http://git.openstack.org/cgit/openstack/magnum-ui

doc/source/index.rst

@@ -1,8 +1,8 @@
-===============================
-magnum-ui
-===============================
+=========
+Magnum-UI
+=========
 
-Magnum Dashboard
+Horizon plugin for Magnum
 
 * Free software: Apache license
 * Source: http://git.openstack.org/cgit/openstack/magnum-ui
@@ -62,11 +62,7 @@ available in your browser at http://localhost:8080/
 Release Notes
 =============
 
-.. toctree::
-  :glob:
-  :maxdepth: 1
-
-  releases/*
+* http://docs.openstack.org/releasenotes/magnum-ui/
 
 Source Code Reference
 =====================

doc/source/releases/0.1.0.rst

@@ -1,2 +0,0 @@
-Magnum UI 0.1.0
-===============