fix import code style

Author: kimmking

dubbo-test/dubbo-test-examples/src/main/java/com/alibaba/dubbo/examples/webservice/WebserviceConsumer.java

@@ -16,7 +16,8 @@
  */
 package com.alibaba.dubbo.examples.webservice;
 
-import com.alibaba.dubbo.examples.webservice.api.*;
+import com.alibaba.dubbo.examples.webservice.api.User;
+import com.alibaba.dubbo.examples.webservice.api.UserService;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 /**