Update the publish task so that it works

git-svn-id: https://svn.apache.org/repos/asf/buildr/trunk@1458759 13f79535-47bb-0310-9956-ffa450edef68
Correctly link to the rdoc

git-svn-id: https://svn.apache.org/repos/asf/buildr/trunk@1458761 13f79535-47bb-0310-9956-ffa450edef68