[Reporting/Docs] User guidance to enable reporting on Cloud (memory c…

…onstraints) (elastic#129989)

* added callout about reporting on cloud

* slight rewording

* v2

docs/user/reporting/index.asciidoc

@@ -27,6 +27,10 @@ You access the options from the *Share* menu in the toolbar. The sharing options
 
 * *Embed code* — Embed a fully interactive dashboard or visualization as an iframe on a web page.
 
+[[reporting-on-cloud-resource-requirements]]
+NOTE: On Elastic Cloud, Kibana requires a minimum of 2GB RAM to generate PDF or PNG reports. To edit Kibana deployments,
+use {ess-console}[Cloud Management].
+
 [float]
 [[manually-generate-reports]]
 == Create reports