NPA-5629: Update expression to list

Author: lelliott-hippo

specification/examples/responses/POST_Consent/errors/invalid_identifier_value.yaml

@@ -11,6 +11,6 @@ PostConsentInvalidIdentifierValueError:
               system: https://fhir.nhs.uk/R4/CodeSystem/ValidatedRelationships-ErrorOrWarningCode
               version: "1"
         diagnostics: Performer identifier value is invalid
-        expression: performer[0].identifier.value
+        expression: [performer[0].identifier.value]
         severity: error
     resourceType: OperationOutcome

specification/examples/responses/POST_Consent/errors/invalid_status.yaml

@@ -11,6 +11,6 @@ PostConsentInvalidStatusError:
               system: https://fhir.nhs.uk/R4/CodeSystem/ValidatedRelationships-ErrorOrWarningCode
               version: "1"
         diagnostics: Status is invalid
-        expression: status
+        expression: [status]
         severity: error
     resourceType: OperationOutcome

specification/examples/responses/POST_Consent/errors/missing_identifier_system.yaml

@@ -11,6 +11,6 @@ PostConsentMissingIdentifierSystemError:
               system: https://fhir.nhs.uk/R4/CodeSystem/ValidatedRelationships-ErrorOrWarningCode
               version: "1"
         diagnostics: Unable to determine the patient identifier system
-        expression: patient.identifier.system
+        expression: [patient.identifier.system]
         severity: error
     resourceType: OperationOutcome

specification/examples/responses/POST_Consent/errors/missing_scope.yaml

@@ -11,6 +11,6 @@ PostConsentMissingScopeError:
               display: Required values are missing.
               system: https://fhir.nhs.uk/R4/CodeSystem/ValidatedRelationships-ErrorOrWarningCode
               version: "1"
-        expression: scope
+        expression: [scope]
         severity: error
     resourceType: OperationOutcome