[dxwg] new commits pushed by davebrowning

The following commits were just pushed by davebrowning to https://github.com/w3c/dxwg:

* dcat :deleting ref to issue 57 which was closed and correcting link to issue 63
  by RiccardoAlbertoni
https://github.com/w3c/dxwg/commit/50b2ad346068a193373932270dfd02c34e8dfeff

* Merge pull request #360 from riccardoAlbertoni/dcat-removingMentionstoclosedIssue57-riccardo

dcat :deleting ref to issue #57 which was closed and correcting link t…
  by David Browning
https://github.com/w3c/dxwg/commit/443876dc53df7010296ffe53d160dabd56203b31