update github URLs in documentation

Some puppet modules have been renamed in openstack-ci-puppet:

* `jenkins_slave` puppet module has been integrated in `jenkins` module
* `openstack-ci-config` has been renamed `openstack_project`

Change-Id: Ie4a35022301c156f74e1fdef859c87319efb60da
Reviewed-on: https://review.openstack.org/13519
Approved: Monty Taylor <mordred@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins
diff --git a/doc/source/launchers.rst b/doc/source/launchers.rst
index d936d4e..ff818be 100644
--- a/doc/source/launchers.rst
+++ b/doc/source/launchers.rst
@@ -86,7 +86,7 @@
 The OpenStack project uses the following script to update the
 repository in a workspace and merge appropriate changes:
 
-  https://github.com/openstack/openstack-ci-puppet/blob/master/modules/jenkins_slave/files/slave_scripts/gerrit-git-prep.sh
+  https://github.com/openstack/openstack-ci-puppet/blob/master/modules/jenkins/files/slave_scripts/gerrit-git-prep.sh
 
 Gerrit events that do not include a change (e.g., ref-updated events
 which are emitted after a git ref is updated (i.e., a commit is merged