Update (git|review).openstack.org links to opendev

This updates links going to git.openstack.org and review.openstack.org
to go to their respective opendev locations to avoid redirects.

Change-Id: I78e3bb5303718962f591117f9c0ee11f2314b128
Closes-Bug: #1833256
diff --git a/doc/source/faq.rst b/doc/source/faq.rst
index efb315c..8214de0 100644
--- a/doc/source/faq.rst
+++ b/doc/source/faq.rst
@@ -80,8 +80,7 @@
 ~~~~~~~~~~~~~~~~~
 
 That isn't a question, but please do! The source for DevStack is at
-`git.openstack.org
-<https://git.openstack.org/cgit/openstack-dev/devstack>`__ and bug
+`opendev.org <https://opendev.org/openstack/devstack>`__ and bug
 reports go to `LaunchPad
 <https://bugs.launchpad.net/devstack/>`__. Contributions follow the
 usual process as described in the `developer guide