[docs][skip ci] Maps read only access (#35561) (#42555)

* Adding read only access to the maps docs

* Removing redundant x-pack label, maps is already x-pack only

* Apply suggestions from code review

Co-Authored-By: gchaps <[email protected]>

* Switching to using a Note

Author: kobelb

docs/maps/images/read-only-badge.png

@@ -13,6 +13,16 @@ light to dark.
 [role="screenshot"]
 image::maps/images/sample_data_web_logs.png[]
 
+[float]
+[[maps-read-only-access]]
+NOTE: If you have insufficient privileges to create or save maps, a read-only icon 
+appears in the application header. The buttons to create new maps or edit
+existing maps won't be visible. For more information on granting access to
+Kibana see <<xpack-security-authorization>>.
+
+[role="screenshot"]
+image::maps/images/read-only-badge.png[Example of Maps' read only access indicator in Kibana's header]
+
 [float]
 === Prerequisites
 Before you start this tutorial, <<add-sample-data, add the web logs sample data set>>. Each