Reflect the separation of the Channel-based Broker. (#2182)

See also: https://github.com/knative/eventing/pull/2519

docs/install/knative-with-any-k8s.md

@@ -376,18 +376,21 @@ The following command installs an implementation of Channel that runs in-memory.
    <!-- This indentation is important for things to render properly. -->
    {{< tabs name="eventing_brokers" default="Channel-based" >}}
 {{% tab name="Channel-based" %}}
+The following command installs an implementation of Broker that utilizes Channels:
 
-The core install above includes an implementation of Broker that uses Channels.
+   ```bash
+   kubectl apply --filename https://github.com/knative/eventing/releases/download/{{< version >}}/channel-broker.yaml
+   ```
 
 To customize which channel implementation is used, update the following ConfigMap:
 
-```yaml
-apiVersion: v1
-kind: ConfigMap
-metadata:
+   ```yaml
+   apiVersion: v1
+   kind: ConfigMap
+   metadata:
      name: default-ch-webhook
      namespace: knative-eventing
-data:
+   data:
      default-ch-config: |
        # This is the cluster-wide default channel.
        clusterDefault:
@@ -404,7 +407,7 @@ data:
            spec:
              numPartitions: 2
              replicationFactor: 1
-```
+   ```
 
 {{< /tab >}}