Update minikube requirements to handle demo-app

docs/_common/cluster-setup.md

@@ -9,8 +9,10 @@ If you don't have the Minikube CLI, first [install it](https://minikube.sigs.k8s
 Then start your Minikube cluster with Calico, in order to enforce network policies.
 
 ```bash
-minikube start --network-plugin=cni --cni=calico
+minikube start --cpus=4 --memory 8192 --disk-size 32g --cni=calico
 ```
+The minikube system requirements are for the demo application in the visual tutorials.
+If you're just trying out the quick tutorials, you can use the default settings for memory, cpu and disk size.
 
 </TabItem>
 <TabItem value="gke" label="Google GKE">