Change the reference from --demo to demo subcommand
@@ -324,7 +324,7 @@ Prometheus settings:
The main way to use PowerfulSeal is to write a policy file for Autonomous mode which reflects realistic failures in your system. However, PowerfulSeal comes with a demo mode to demonstrate how it can cause chaos on your Kubernetes cluster. Demo mode gets all the pods in the cluster, selects those which are using the most resources, then kills them based on a probability.
-Demo mode requires [Heapster](https://github.com/kubernetes/heapster). To run demo mode, use the `--demo` flag along with `--heapster-path` (path to heapster without a trailing slash, e.g., `http://localhost:8001/api/v1/namespaces-kube-system/services/heapster/proxy`). You can also optionally specify `--aggressiveness` (from `1` (weakest) to `5` (strongest)) inclusive, as well as `--[min/max]-seconds-between-runs`.
+Demo mode requires [Heapster](https://github.com/kubernetes/heapster). To run demo mode, use the `demo` subcommand along with `--heapster-path` (path to heapster without a trailing slash, e.g., `http://localhost:8001/api/v1/namespaces-kube-system/services/heapster/proxy`). You can also optionally specify `--aggressiveness` (from `1` (weakest) to `5` (strongest)) inclusive, as well as `--[min/max]-seconds-between-runs`.
```sh
$ seal demo --help
