Add rendering for references with/without a version

[ahenket]

Describe the issue
When Reference datatypes based on a canonical are rendered, most notably on a StructureDefinition ElementDefinition.binding.valueSet you will not see whether this is a canonical with or without a version. In this way a user cannot see if the link he follows to the valueSet or other artefact is always going to be that version or just today because tomorrow there could be a newer version.

Example 1:

<binding xmlns="http://hl7.org/fhir">
   <strength value="..."/>
   <description value="..."/>
   <valueSet value="http://hl7.org/fhir/ValueSet/bundle-type|5.0.0" />
</binding>

Currently renders exactly the same as example 2:

<binding xmlns="http://hl7.org/fhir">
   <strength value="..."/>
   <description value="..."/>
   <valueSet value="http://hl7.org/fhir/ValueSet/bundle-type" />
</binding>

Suggested rendering for example 1:
bundle-type (5.0.0)

Suggested rendering for example 2:
bundle-type (latest)