fixed error message

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/rabbitmq/TbRabbitMqNode.java

@@ -156,8 +156,8 @@ public class TbRabbitMqNode extends TbAbstractExternalNode {
             case "PERSISTENT_TEXT_PLAIN":
                 return MessageProperties.PERSISTENT_TEXT_PLAIN;
             default:
-                throw new TbNodeException("Undefined message properties '" + name +
+                throw new TbNodeException("Undefined message properties type '" + name +
-                        "'! Only " + supportedPropertiesStr + " message properties are supported!");
+                        "'! Only " + supportedPropertiesStr + " message properties types are supported!");
         }
     }
 }

rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/rabbitmq/TbRabbitMqNodeTest.java

@@ -241,7 +241,7 @@ public class TbRabbitMqNodeTest {
         assertThatThrownBy(() -> TbRabbitMqNode.convert(name))
                 .isInstanceOf(TbNodeException.class)
                 .hasMessage("Undefined message properties type '" + name +
-                        "'! Only " + supportedPropertiesStr + " message properties are supported!");
+                        "'! Only " + supportedPropertiesStr + " message properties types are supported!");
     }
 
     @Test