Merge pull request #68 from neuroglia-io/fix-67-exit-flow-directive-v…

…alidation

fix(Validation): fixed `exit` flow directive validation

src/ServerlessWorkflow.Sdk/Validation/SwitchCaseDefinitionValidator.cs

@@ -68,7 +68,7 @@ protected virtual bool NotAFlowDirective(MapEntry<string, SwitchCaseDefinition>
     {
         return @case.Value.Then switch
         {
-            null or "" or FlowDirective.Continue or FlowDirective.End or FlowDirective.End => false,
+            null or "" or FlowDirective.Continue or FlowDirective.End or FlowDirective.Exit => false,
             _ => true
         };
     }