Metrics documentation link to Grafana dashboard template is incorrect.

This page contains metrics documentation:

https://github.com/apache/zookeeper/blob/master/zookeeper-docs/src/main/resources/markdown/zookeeperMonitor.md

It includes a link to a Grafana dashboard template, but it goes to a 404:

https://grafana.com/dashboards/10465

I think the correct link is this:

https://grafana.com/grafana/dashboards/10465-zookeeper-by-prometheus/

Thank you to Nicolas Parducci for reporting this.