Data Types - AbsoluteURI

"Absolute URI as defined in RFC 3986 (TNF=3)" should be a Blob message type
instead of a URL type.

http://w3c.github.io/nfc/index.html#data-types

The URI in the Absolute URI record is used to *describe* the payload,
rather than deliver a URI as a payload.

For example, a Windows LaunchApp Record uses TNF=3, the URI "
windows.com/LaunchApp" and binary content as the payload.