Fix the expression of eld-11

[marcovisserFurore]

Describe the bug
The FHIR Path expression of constraint eld-11 is not correct. The current expression is:

"binding.empty() or type.code.empty() or type.code.contains(\":\") or type.select((code = 'code') or (code = 'Coding') or (code='CodeableConcept') or (code = 'Quantity') or (code = 'string') or (code = 'uri') or (code = 'Duration')).exists()"

but it should be:

binding.empty() or type.code.empty() or type.code.contains(':') or type.select((code = 'code') or (code = 'Coding') or (code='CodeableConcept') or (code = 'Quantity') or (code = 'string') or (code = 'uri') or (code = 'Duration')).exists()"

There are double quotes in the expression, which should be single quotes.

This should be solved in the Legacy Validator and the new Firely Validator.

Version used:

• FHIR Version: all (I think)
• Version: 5.2