Add some notation for test module

spring-cloud-alibaba-tests/nacos-tests/nacos-config-test/src/test/java/com/alibaba/cloud/tests/nacos/config/NacosConfigRefreshTest.java

@@ -38,6 +38,8 @@ import static org.assertj.core.api.Assertions.assertThat;
 import static org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT;
 
 /**
+ *
+ * Test function: Nacos config refresh.
  *
  * @author freeman
  */

spring-cloud-alibaba-tests/spring-cloud-alibaba-test-support/src/main/java/com/alibaba/cloud/testsupport/ContainerStarter.java

@@ -28,6 +28,7 @@ import org.testcontainers.shaded.org.apache.commons.io.FileUtils;
 import org.springframework.core.io.ClassPathResource;
 
 /**
+ * Util class for starting the related container.
  *
  * @author freeman
  * @since 2021.0.1.0