fix:fix code style error.

Signed-off-by: Haotian Zhang <928016560@qq.com>

spring-cloud-tencent-examples/quickstart-example/quickstart-caller-service/src/main/java/com/tencent/cloud/quickstart/caller/QuickstartCallerController.java

@@ -26,8 +26,8 @@ import java.util.concurrent.atomic.AtomicInteger;
 import com.tencent.cloud.common.metadata.MetadataContext;
 import com.tencent.cloud.common.metadata.MetadataContextHolder;
 import com.tencent.cloud.common.util.JacksonUtils;
-import com.tencent.cloud.polaris.discovery.PolarisServiceDiscovery;
 import com.tencent.cloud.common.util.PolarisCompletableFutureUtils;
+import com.tencent.cloud.polaris.discovery.PolarisServiceDiscovery;
 import com.tencent.cloud.quickstart.caller.pojo.User;
 import com.tencent.polaris.api.utils.StringUtils;
 import org.slf4j.Logger;