Merge pull request #3610 from ClickHouse/kapustor-patch-1

Update warehouses.md

Author: Blargian

docs/cloud/reference/warehouses.md

@@ -104,7 +104,8 @@ Sometimes it is useful to restrict write access to a specific service and allow
 _Fig. 6 - Read-write and Read-only services in a warehouse_
 
 :::note
-Read-only services currently allow user management operations (create, drop, etc). This behavior may be changed in the future.
+1. Read-only services currently allow user management operations (create, drop, etc). This behavior may be changed in the future.
+2. Currently, refreshable materialized views are executed on all services in the warehouse, including read-only services. This behavior will be changed in the future, however, and they will be executed on RW services only.
 :::