diff --git a/zh_CN/guides/application-design/extension/README.md b/zh_CN/guides/application-design/extension/README.md
index bfc1568..a76844c 100644
--- a/zh_CN/guides/application-design/extension/README.md
+++ b/zh_CN/guides/application-design/extension/README.md
@@ -4,4 +4,4 @@
 
 [api\_based\_extension](api\_based\_extension/ "mention")
 
-[code\_based\_extension](code\based\_extension/ "mention")
\ No newline at end of file
+[code\_based\_extension](code\_based\_extension/ "mention")
\ No newline at end of file