Fix date verifier show action

dmnverifierapi/src/main/java/de/unikoblenz/fgbks/core/dmn/verification/verifier/impl/DateVerifier.java

@@ -61,6 +61,8 @@ public class DateVerifier extends AbstractVerifier {
     Matcher matcher = datePattern.matcher(dateStringValue);
     if (!matcher.find()) {
       vreFactory.addElement(VerificationResultEntryElement.create(dateValue));
+      vreFactory.addVerificationFix(
+          dateValue.isInputValue() ? SHOW_INPUT_ENTRIES : SHOW_OUTPUT_ENTRIES);
       vreFactory.addToEntry(
           VerificationClassification.FATAL_ERROR,
           templateDecisionRule(dateValue.getDmnRule())