refactor: 修改DTU未连接的错误提示

src/ThingsGateway.Foundation/Locales/en-US.json

@@ -14,7 +14,7 @@
     "Disconnected": "Disconnected",
     "Disconnecting": "Disconnecting",
     "DtuConnected": "Dtu identifier {0} connection successful",
-    "DtuNoConnectedWaining": "The client is not connected or the register is set incorrectly. The register must be set id＝｛Dtu registration packet｝",
+    "DtuNoConnectedWaining": "The Client(Dtu) is not connected",
     "ErrorMessage": "Error message",
     "EventError": "Error occurred in event {0}",
     "Exception": "Exception stack",

src/ThingsGateway.Foundation/Locales/zh-CN.json

@@ -14,7 +14,7 @@
     "Disconnected": "断开连接",
     "Disconnecting": "正在断开连接",
     "DtuConnected": "Dtu标识 {0} 连接成功",
-    "DtuNoConnectedWaining": "客户端未连接或寄存器设置不正确。寄存器必须设置id＝｛Dtu注册包｝",
+    "DtuNoConnectedWaining": "客户端(Dtu)未连接",
     "ErrorMessage": "错误信息",
     "EventError": "在事件 {0} 中发生错误",
     "Exception": "异常堆栈",