Examples outdated and not working with recent version of Elasticsearch

Examples shown for the creation of deployments ([link](https://www.elastic.co/guide/en/ecctl/master/ecctl-example-create-deployment.html)) show a very old version of elasticsearch, and some of the configuration options (such as the `node_type` definition) are not accepted by more recent versions of Elasticsearch, leading to errors.

This is the output from `ecctl` when using the example provided in the doc AND we change the `version` to something more updated:

```
deployments.elasticsearch.node_type.unsupported_version: The node_type field in the Elasticsearch topology is not supported in this version of elasticsearch.
```

Would it be possible to have a more recent version of the JSON payload?