Merge pull request #1 from abutcher/master-certificates

Add steps for generating new master certificates

Author: mwringe

install_config/cluster_metrics.adoc

@@ -58,7 +58,7 @@ ifdef::openshift-origin[]
 If your OpenShift installation was originally performed on a version previous to
 v1.0.8, even if it has since been updated to a newer version, you will need to 
 follow these steps outlined in the
-link:upgrades.html#openshift-origin-pre-1-0-8-certificate-update[update]
+link:upgrades.html#updating-node-certificates[update]
 document. If the node certificate does not contain the IP address of the node, then Heapster
 will fail to retrieve any metrics.
 ====