Prometheus is documented here: https://console.stage1.bluemix.net/docs/containers/cs_planning.html#cs_planning_health as part of a huge chunked page. If I search for Prometheus in the staging docs, I get a hit for every topic that is part in the chunking, although the content itself lives only in the link posted above.
As a consequence, I can see 10 hits that don't take me to the right content if I click on them. This should be fixed, so that people get only hits for pages that have the content.