editorial remarks

[bertvannuffelen]

In section 4 https://w3c.github.io/dxwg/dcat/#conformance the first bullet mentions

Access to data is organized into datasets, distributions, and data-services.

suggested to extend to

Access to data is organized into datasets, distributions, data services and dataset series.

Also in the text twice the dashed form data-services occurs, I suggest them to replace with the the label data services, as in the rest of the text.