[Docs] Update Monitoring docs with integration assets info (#112164) (#112528)

* [Docs] Update Monitoring docs with integration assets info

* [Docs] Adding test commit to fix CLA error

Author: wajihaparvez

docs/reference/monitoring/production.asciidoc

@@ -73,7 +73,9 @@ credentials must be valid on both the {kib} server and the monitoring cluster.
 
 *** If you plan to use {agent},
 create a user that has the `remote_monitoring_collector`
-<<built-in-roles-remote-monitoring-agent,built-in role>>.
+<<built-in-roles-remote-monitoring-agent,built-in role>> and that the
+monitoring related {fleet-guide}/install-uninstall-integration-assets.html#install-integration-assets[integration assets have been installed]
+on the remote monitoring cluster. 
 
 *** If you plan to use {metricbeat},
 create a user that has the `remote_monitoring_collector` built-in role and a