Broken link in README.md

[Skeen]

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The README.md file starts like this:

A node.js/JavaScript parser of NMEA0183 sentences. Sentences are parsed to Signal K delta format.

However the link is broken, and should presumably be https://signalk.org/specification/1.4.0/doc/data_model.html?

[Skeen]

The same applies later to this snippet: '... in memory (a big change vs. 1.x), so the output will be stringified Signal K delta '