Fix command line arg usage

dashboard/src/main/home/modals/ClusterInstructionsModal.tsx

@@ -84,7 +84,7 @@ export default class ClusterInstructionsModal extends Component<
             there are two contexts named minikube and staging, you could connect
             both of them via:
             <Code>
-              porter connect kubeconfig --contexts minikube --contexts staging
+              porter connect kubeconfig --context minikube --context staging
             </Code>
           </Placeholder>
         );

docs/GETTING_STARTED.md

@@ -99,5 +99,5 @@ porter connect kubeconfig --kubeconfig path/to/kubeconfig
 You can initialize Porter with a set of contexts by passing a context list to start. The contexts that Porter will be able to access are the same as `kubectl config get-contexts`. For example, if there are two contexts named `minikube` and `staging`, you could connect both of them via:
 
 ```sh
-porter connect kubeconfig --contexts minikube --contexts staging
+porter connect kubeconfig --context minikube --context staging
 ```