As a developer, I want to update Concise documentation so merge and concatenate distinction is well understood by readers

[stephenykp]

Add merge capability to Concise auto=published documentation

[stephenykp]

The documentation is out of date and contains false information. See https://podaac.github.io/concise/

One possible route towards integrating CONCISE with Harmony and maintaining OCG API compliance is to extend the NetCDF4 MIME with additional metadata.

This is not the route we ended up taking so we should remove this and replace it with correct info