DOCS: update examples in user README.md (#301)
DOCS: update examples in user README.md (#301)

This PR updates the example data in the user readme to conform to the latest version of the DLx spec. It is part of #301.

Co-Authored-By: vadekh <dab1c4d692e8645ea21581f4f20f88f0647b9f48@users.noreply.github.com>

digitallinguistics/spec,digitallinguistics/dlx-spec