fix broken MaaS docs url

Change-Id: Ib056bf801f503148388444c76cec6146c87ae6a5
diff --git a/docs/install_virtual.md b/docs/install_virtual.md
index 56713b8..506e511 100644
--- a/docs/install_virtual.md
+++ b/docs/install_virtual.md
@@ -302,7 +302,7 @@
 CloudLab, your `<target-server>` is the hostname of your CloudLab node.  The
 username is `cord` and the auto-generated password is found in
 `~/cord/build/maas/passwords/maas_user.txt` on the CiaB server.  For more
-information on MAAS, see [the MAAS documentation](http://maas.io/docs).
+information on MAAS, see [the MAAS documentation](http://docs.maas.io).
 
 ### XOS GUI