Changes

Some fine tuning on the Specification diagrams (#236)

* Allow "description"-like properties to be multi-lined.

* Support Configuration in SpecificationDiagram. Currently only possible
in DomainSpecification (a bug).

* Starting the default name of Vocabulary Property terms with lower case
character.

* show the domain prefix for reference properties in the same way it is
show for literal properties (Show a prefix if the property is used in a
differernt domain than it is defined in.)

Co-authored-by: JELX25 <JELX25@RD0085946.mshome.net>