Change availability note

Author: maxvp

src/content/docs/cloudflare-one/policies/gateway/managed-service-providers.mdx

@@ -5,8 +5,8 @@ sidebar:
   order: 15
 ---
 
-:::note[Gateway DNS only]
-Gateway only supports MSP-tenant account structures for DNS filtering.
+:::note
+Only available on Enterprise plans. For more information, contact your account team.
 :::
 
 Gateway supports the Cloudflare Tenant API, which allows managed service providers (MSPs) to implement parent-child policy structures, supporting large-scale multi-tenant deployments with centralized policy control and account-level overrides.