Node_type vs node_roles, wrong documentation?

Hello,

I see in ECE 2.13 the node_type parameter in the instances is replaced with node_types, but I see the documentation examples and there is still node_type being mentioned:

Create instance configurations | Elastic Cloud Enterprise Reference [2.13] | Elastic

This mean the documentation is wrong, or the change applies only in some parts of the API?

What is more confusing is the deployment config section uses both:

Create deployment templates | Elastic Cloud Enterprise Reference [2.13] | Elastic

And node type in a different format

master: true

vs

master

Thanks