docs: add useful debug CLI

Change-Id: I5ef9ecd741f1623ae1b7a23fa0a4fa6db7e243a3
Signed-off-by: Scott Keeler <skeeler@cisco.com>
diff --git a/docs/reference/cmdreference/vhost/index.rst b/docs/reference/cmdreference/vhost/index.rst
index 3e41718..d1cce23 100644
--- a/docs/reference/cmdreference/vhost/index.rst
+++ b/docs/reference/cmdreference/vhost/index.rst
@@ -1,5 +1,7 @@
 .. _vhostcommands:
 
+.. note:: For a complete list of CLI Debug commands refer to the Debug CLI section of the `Source Code Documents <https://docs.fd.io/vpp/18.07/clicmd.html>`_ .
+
 Vhost User Commands
 ===================