Fixed example for workflow definition parameter value

Author: ecfan

articles/logic-apps/logic-apps-azure-resource-manager-templates-overview.md

@@ -389,7 +389,9 @@ This syntax shows where you can declare parameters at both the template and work
             },
             // Workflow definition parameter value
             "parameters": {
-               "<workflow-definition-parameter-name>": "[parameters('<template-parameter-name>')]"
+               "<workflow-definition-parameter-name>": { 
+                  "value": "[parameters('<template-parameter-name>')]"
+               }
             },
             "accessControl": {}
          },