Update the documentation link for doc migration

Change-Id: I48e1d33c89096db1406cb3fc4c654ffe74bb40cd
BTW: Do some optimization as well (http -> https)

CONTRIBUTING.rst

@@ -11,8 +11,8 @@ Contributor License Agreement
 In order to contribute to the Murano project, you need to have
 signed OpenStack's contributor's agreement:
 
-* http://docs.openstack.org/infra/manual/developers.html
-* http://wiki.openstack.org/CLA
+* https://docs.openstack.org/infra/manual/developers.html
+* https://wiki.openstack.org/CLA
 
 
 Project Hosting Details
@@ -46,4 +46,4 @@ Project Hosting Details
 * Code Review
     * https://review.openstack.org/#/q/murano+AND+status:+open,n,z
 
-    * http://docs.openstack.org/infra/manual/developers.html#development-workflow
+    * https://docs.openstack.org/infra/manual/developers.html#development-workflow

HACKING.rst

@@ -1,4 +1,4 @@
 Style Commandments
 ==================
 
-Read the OpenStack Style Commandments http://docs.openstack.org/developer/hacking/
+Read the OpenStack Style Commandments https://docs.openstack.org/hacking/latest/

README.rst

@@ -44,7 +44,7 @@ Project status, bugs, and blueprints are tracked on Launchpad:
 
 Developer documentation can be found here:
 
-  http://docs.openstack.org/developer/murano/
+  https://docs.openstack.org/murano/latest/
 
 Additional resources are linked from the project wiki page:
 

setup.cfg

@@ -6,7 +6,7 @@ description-file =
 license = Apache License, Version 2.0
 author = OpenStack
 author-email = openstack-dev@lists.openstack.org
-home-page = http://docs.openstack.org/developer/murano/
+home-page = https://docs.openstack.org/murano/latest/
 classifier =
     Development Status :: 5 - Production/Stable
     Environment :: OpenStack