Avoid deletion of entire namespace by accident

Yep, that happened to me. I did

```
kubectl delete -f deployment/human-connection
```

 and I forgot about the namespace in that folder. Now everything is gone.

deployment/human-connection/README.md

@@ -38,7 +38,7 @@ your deployed kubernetes pods.
 ## Create a namespace
 
 ```bash
-# in folder deployment/human-connection/
+# in folder deployment/
 $ kubectl apply -f namespace.yaml
 ```