Need to add appropriate warning while setting up Couchbase Server with Custom Ports

In our documentation: http://labs.couchbase.com/docs-preview/server/5.5/install/install-ports.html#custom-port-mapping

Under the topic "Setting up Couchbase Server with Custom Ports" the point,
If Couchbase Server was previously configured, delete the opt/couchbase/var/lib/couchbase/config/config.dat file to remove the old configuration.

needs to be emphasized in bold. If the cluster is already initialized, this will reset the cluster and it would require the cluster to be re-initialized