Code review comment for lp:~kim0/serverguide/serverguide-review-ch19

That makes sense, Ahmed, thanks for posting back. Since we do not have system documentation available yet for Ubuntu Cloud, let's add a note that UEC is no longer available and post a link to online documentation about Ubuntu Cloud (even if it's still a placeholder). Right now I see http://cloud.ubuntu.com/ but we should be able to stub a page on wiki.ubuntu.com (or even better, help.ubuntu.com/community) for docs on using Ubuntu Cloud.