Hide docs for mamanaged agent on k8s (elastic#799)

Signed-off-by: ChrsMark <chrismarkou92@gmail.com>

docs/en/ingest-management/elastic-agent/elastic-agent.asciidoc

@@ -16,7 +16,7 @@ To learn how to install, configure, and run your {agent}s, see:
 * <<elastic-agent-installation>>
 * <<uninstall-elastic-agent>>
 * <<run-elastic-agent-standalone>>
-* <<running-on-kubernetes>>
+//* <<running-on-kubernetes>>
 * <<running-on-kubernetes-standalone>>
 * <<upgrade-elastic-agent>>
 * <<start-elastic-agent>>
@@ -31,7 +31,7 @@ include::uninstall-elastic-agent.asciidoc[leveloffset=+1]
 
 include::run-elastic-agent-standalone.asciidoc[leveloffset=+1]
 
-include::running-on-kubernetes.asciidoc[leveloffset=+1]
+//include::running-on-kubernetes.asciidoc[leveloffset=+1]
 
 include::running-on-kubernetes-standalone.asciidoc[leveloffset=+1]