docs: 通道更新信息变更

@@ -139,7 +139,7 @@
   //通道同步
   const handleSyncPlay = async () => {
     if (await syncVideoApiGet(props.deviceDetail.tbDeviceId)) {
-      createMessage.success('已同步');
+      createMessage.success('通道已同步,请稍后刷新查看结果');
       reload();
     }
   };