Update URLs in documents according to document migration

Change-Id: Ibfdbe43046084f22c8790e08c7380e1ac7260bb9

HACKING.rst

@@ -2,7 +2,7 @@ Freezer Style Commandments
 ===========================
 
 - Step 1: Read the OpenStack Style Commandments
-  https://docs.openstack.org/developer/hacking/
+  https://docs.openstack.org/hacking/latest/
 - Step 2: Read on
 
 Freezer Specific Commandments
@@ -65,10 +65,10 @@ Release Notes
 
   * Generate a release notes page
      1. tox -e venv -- reno new {my-new-feature}
-     2. https://docs.openstack.org/developer/reno/usage.html#creating-new-release-notes
+     2. https://docs.openstack.org/reno/latest/user/index.html#creating-new-release-notes
 
   * Update/Edit an existing release note
-     1. https://docs.openstack.org/developer/reno/usage.html#editing-a-release-note
+     1. https://docs.openstack.org/reno/latest/user/index.html#editing-a-release-note
 
 
 - Building release notes::

devstack/README.rst

@@ -33,4 +33,4 @@ Then run devstack normally::
     ./stack.sh
 
 For more information, see:
- https://docs.openstack.org/developer/devstack/plugins.html
+ https://docs.openstack.org/devstack/latest/plugins.html

specs/integration_test_procedure.rst

@@ -36,7 +36,7 @@ In this example the server machine has a (main) interface with ip 192.168.20.100
 
 1.1 devstack
 ------------
-Install devstack with swift support. See https://docs.openstack.org/developer/devstack/
+Install devstack with swift support. See https://docs.openstack.org/devstack/latest/
 ::
 
   $ cat local.conf