use create-namespace in helm docs

docs/admission-controller.md

@@ -28,7 +28,9 @@ kubectl apply -f https://github.com/fairwindsops/polaris/releases/latest/downloa
 ### Helm
 ```bash
 helm repo add fairwinds-stable https://charts.fairwinds.com/stable
-helm upgrade --install polaris fairwinds-stable/polaris --namespace polaris \
+helm upgrade --install polaris fairwinds-stable/polaris \
+  --namespace polaris \
+  --create-namespace \
   --set webhook.enable=true --set dashboard.enable=false
 ```
 

docs/dashboard.md

@@ -19,7 +19,11 @@ kubectl port-forward --namespace polaris svc/polaris-dashboard 8080:80
 ### Helm
 ```bash
 helm repo add fairwinds-stable https://charts.fairwinds.com/stable
-helm upgrade --install polaris fairwinds-stable/polaris --namespace polaris
+
+helm upgrade --install polaris fairwinds-stable/polaris \
+  --namespace polaris \
+  --create-namespace
+
 kubectl port-forward --namespace polaris svc/polaris-dashboard 8080:80
 ```