diff --git a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/CustomMetadata.java b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/CustomMetadata.java
index 9504e9758..fbfa22614 100644
--- a/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/CustomMetadata.java
+++ b/spring-cloud-tencent-examples/polaris-discovery-example/discovery-callee-service/src/main/java/com/tencent/cloud/polaris/discovery/service/callee/CustomMetadata.java
@@ -27,7 +27,8 @@ import org.springframework.stereotype.Component;
 
 /**
  * custom metadata for instance.
- *@author lepdou 2022-06-16
+ *
+ * @author lepdou 2022-06-16
  */
 @Component
 public class CustomMetadata implements InstanceMetadataProvider {