diff --git a/docs/admin-api-topics.md b/docs/admin-api-topics.md
index c15cfa5905a5..cb9b82814047 100644
--- a/docs/admin-api-topics.md
+++ b/docs/admin-api-topics.md
@@ -38,6 +38,8 @@ non-persistent://tenant/namespace/topic
 
 Topic naming: due to backward compability, some special characters, eg., "/", is allowed as a part of topic name. But we recommended that you should avoid using special characters as a part of topic name.
 
+:::
+
 ## Manage topic resources
 Whether it is a persistent or non-persistent topic, you can obtain the topic resources through `pulsar-admin` tool, REST API and Java.