Not exactly. Incorporating a world or domain model usually means taking pre-existing declarative knowledge in some form (e.g. from a semantic net) and using it to aid learning.

To quote the article, "Model-based reinforcement learning aims to address this issue by first learning a model of the environment’s dynamics, and then planning with respect to the learned model."

So they've sped up learning from examples by learning a model first, but it's still learning from examples.

That seems a fairly specific meaning of the term that may not be in wider use, see eg: https://arxiv.org/abs/1803.10122