Update control-plane-node-communication.md

Kubernetes Service is located on Default namespace. Not in all nespaces

Author: pierrevillard

content/en/docs/concepts/architecture/control-plane-node-communication.md

@@ -24,7 +24,7 @@ One or more forms of [authorization](/docs/reference/access-authn-authz/authoriz
 Nodes should be provisioned with the public root certificate for the cluster such that they can connect securely to the apiserver along with valid client credentials. A good approach is that the client credentials provided to the kubelet are in the form of a client certificate. See [kubelet TLS bootstrapping](/docs/reference/command-line-tools-reference/kubelet-tls-bootstrapping/) for automated provisioning of kubelet client certificates.
 
 Pods that wish to connect to the apiserver can do so securely by leveraging a service account so that Kubernetes will automatically inject the public root certificate and a valid bearer token into the pod when it is instantiated.
-The `kubernetes` service (in all namespaces) is configured with a virtual IP address that is redirected (via kube-proxy) to the HTTPS endpoint on the apiserver.
+The `kubernetes` service (in `default` namespace) is configured with a virtual IP address that is redirected (via kube-proxy) to the HTTPS endpoint on the apiserver.
 
 The control plane components also communicate with the cluster apiserver over the secure port.