Update and replace http with https for doc links

1) Update doc links according to OpenStack document migration
2) Use https instead of http for docs links

Change-Id: Ifc989878800e7327580655e13f0e31d77cc37715

CONTRIBUTING.rst

@@ -1,14 +1,14 @@
 If you would like to contribute to the development of OpenStack, you must
 follow the steps in this page:
 
-   http://docs.openstack.org/infra/manual/developers.html
+   https://docs.openstack.org/infra/manual/developers.html
 
 If you already have a good understanding of how the system works and your
 OpenStack accounts are set up, you can skip to the development workflow
 section of this documentation to learn how changes to OpenStack should be
 submitted for review via the Gerrit tool:
 
-   http://docs.openstack.org/infra/manual/developers.html#development-workflow
+   https://docs.openstack.org/infra/manual/developers.html#development-workflow
 
 Pull requests submitted through GitHub will be ignored.
 

HACKING.rst

@@ -1,4 +1,4 @@
 os-api-ref 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

@@ -2,8 +2,8 @@
 Team and repository tags
 ========================
 
-.. image:: http://governance.openstack.org/badges/os-api-ref.svg
-    :target: http://governance.openstack.org/reference/tags/index.html
+.. image:: https://governance.openstack.org/tc/badges/os-api-ref.svg
+    :target: https://governance.openstack.org/tc/reference/tags/index.html
 
 .. Change things from this point on
 
@@ -108,5 +108,5 @@ a pointer to more precise descriptions for each code. For example::
 
 
 * Free software: Apache license
-* Documentation: http://docs.openstack.org/developer/os-api-ref
-* Source: http://git.openstack.org/cgit/openstack/os-api-ref
+* Documentation: https://docs.openstack.org/os-api-ref/latest/
+* Source: https://git.openstack.org/cgit/openstack/os-api-ref