Reword explanation of ClusterIP for Services

Author: guettli

content/en/docs/concepts/services-networking/service.md

@@ -653,6 +653,8 @@ Kubernetes `ServiceTypes` allow you to specify what kind of Service you want.
 * `ClusterIP`: Exposes the Service on a cluster-internal IP. Choosing this value
   makes the Service only reachable from within the cluster. This is the
   default that is used if you don't explicitly specify a `type` for a Service.
+  You can expose the service to the public with an Ingress or the
+  Gateway API.
 * [`NodePort`](#type-nodeport): Exposes the Service on each Node's IP at a static port
   (the `NodePort`).
   To make the node port available, Kubernetes sets up a cluster IP address,