Updated from generate-devstack-plugins-list

Change-Id: I5cd5f2bafb7ace88c28c52994c339b95904ab03b
diff --git a/doc/source/plugin-registry.rst b/doc/source/plugin-registry.rst
index 0ceb829..99681b3 100644
--- a/doc/source/plugin-registry.rst
+++ b/doc/source/plugin-registry.rst
@@ -110,6 +110,7 @@
 nova-powervm                           `git://git.openstack.org/openstack/nova-powervm <https://git.openstack.org/cgit/openstack/nova-powervm>`__
 octavia                                `git://git.openstack.org/openstack/octavia <https://git.openstack.org/cgit/openstack/octavia>`__
 osprofiler                             `git://git.openstack.org/openstack/osprofiler <https://git.openstack.org/cgit/openstack/osprofiler>`__
+panko                                  `git://git.openstack.org/openstack/panko <https://git.openstack.org/cgit/openstack/panko>`__
 python-freezerclient                   `git://git.openstack.org/openstack/python-freezerclient <https://git.openstack.org/cgit/openstack/python-freezerclient>`__
 rally                                  `git://git.openstack.org/openstack/rally <https://git.openstack.org/cgit/openstack/rally>`__
 sahara                                 `git://git.openstack.org/openstack/sahara <https://git.openstack.org/cgit/openstack/sahara>`__