update version.

qg-discovery-starter/src/main/java/cn/quantgroup/boot/DisCoveryAutoConfiguration.java

 package cn.quantgroup.boot;
 
 import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
-import com.alibaba.cloud.nacos.NacosServiceManager;
-import com.alibaba.cloud.nacos.endpoint.NacosDiscoveryEndpoint;
 import com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration;
 import feign.Feign;
 import feign.RequestInterceptor;
 import org.slf4j.MDC;
 import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnAvailableEndpoint;
-import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
-import org.springframework.boot.actuate.endpoint.web.annotation.WebEndpoint;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.cloud.client.ServiceInstance;
 import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

qg-discovery-starter/src/main/java/cn/quantgroup/boot/ServiceDeployEndpoint.java

@@ -17,12 +17,14 @@ public class ServiceDeployEndpoint {
   }
 
   @ReadOperation
-  public void offLine() {
+  public String offLine() {
     nacosAutoServiceRegistration.stop();
+    return "ok";
   }
 
   @WriteOperation
-  public void onLine(){
+  public String onLine(){
     nacosAutoServiceRegistration.start();
+    return "ok";
   }
 }
\ No newline at end of file