Update links to existing documentation

* Link to module autodoc instead of github
* Link to the new IPA inventory documentation

Change-Id: I4ed7db13f0f890fcbec553935861f4dbeb712a03

CONTRIBUTING.rst

@@ -284,8 +284,8 @@ Writing a Plugin
     ``**`` argument is needed so that we can add optional arguments without
     breaking out-of-tree plugins. Please make sure to include and ignore it.
 
-.. _ironic_inspector.plugins.base: https://github.com/openstack/ironic-inspector/blob/master/ironic_inspector/plugins/base.py
-.. _Introspection Rules: https://github.com/openstack/ironic-inspector#introspection-rules
+.. _ironic_inspector.plugins.base: http://docs.openstack.org/developer/ironic-inspector/api/ironic_inspector.plugins.base.html
+.. _Introspection Rules: http://docs.openstack.org/developer/ironic-inspector/usage.html#introspection-rules
 
 Making changes to the database
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -335,5 +335,5 @@ database::
     ironic-inspector-dbsync revision -m "A short description"
 
 .. _Create a Migration Script: https://alembic.readthedocs.org/en/latest/tutorial.html#create-a-migration-script
-.. _ironic_inspector.db: https://github.com/openstack/ironic-inspector/blob/master/ironic_inspector/db.py
+.. _ironic_inspector.db: http://docs.openstack.org/developer/ironic-inspector/api/ironic_inspector.db.html
 .. _What does Autogenerate Detect (and what does it not detect?): http://alembic.readthedocs.org/en/latest/autogenerate.html#what-does-autogenerate-detect-and-what-does-it-not-detect

doc/source/http-api.rst

@@ -164,7 +164,7 @@ Ramdisk Callback
 discovered data. Should not be used for anything other than implementing
 the ramdisk. Request body: JSON dictionary with at least these keys:
 
-* ``inventory`` full hardware inventory from the ironic-python-agent with at
+* ``inventory`` full `hardware inventory`_ from the ironic-python-agent with at
   least the following keys:
 
   * ``memory`` memory information containing at least key ``physical_mb`` -
@@ -237,6 +237,8 @@ body will contain the following keys:
 * ``ipmi_username`` new IPMI user name
 * ``ipmi_password`` new IPMI password
 
+.. _hardware inventory: http://docs.openstack.org/developer/ironic-python-agent/#hardware-inventory
+
 Error Response
 ~~~~~~~~~~~~~~