Update reference links

This patch updates some outdated links reference inside the doc.

Change-Id: I90aa82f16e32441a1c457f413c75e0289ba7d93f

doc/admin-guide/source/networking-auth.rst

@@ -11,7 +11,7 @@ to the Networking service must provide an authentication token in
 authenticating with the Identity service endpoint. For more information
 about authentication with the Identity service, see `OpenStack Identity
 service API v2.0
-Reference <http://developer.openstack.org/api-ref-identity-v2.html>`__.
+Reference <http://developer.openstack.org/api-ref/identity/v2/>`__.
 When the Identity service is enabled, it is not mandatory to specify the
 tenant ID for resources in create requests because the tenant ID is
 derived from the authentication token.

doc/admin-guide/source/networking-introduction.rst

@@ -12,7 +12,7 @@ firewalls, and IPsec VPN.
 
 For a detailed description of the Networking API abstractions and their
 attributes, see the `OpenStack Networking API v2.0
-Reference <http://developer.openstack.org/api-ref-networking-v2.html>`__.
+Reference <http://developer.openstack.org/api-ref/networking/v2/>`__.
 
 .. note::
 

doc/admin-guide/source/shared-file-systems-services-manage.rst

@@ -6,7 +6,7 @@ Manage shares services
 
 The Shared File Systems service provides API that allows to manage running
 share services (`Share services API
-<http://developer.openstack.org/api-ref-share-v2.html#share-services>`_).
+<http://developer.openstack.org/api-ref/shared-file-systems/>`_).
 Using the :command:`manila service-list` command, it is possible to get a list
 of all kinds of running services. To select only share services, you can pick
 items that have field ``binary`` equal to ``manila-share``. Also, you can