diff --git a/docs/playground/hooks.md b/docs/playground/hooks.md
index d9e8ead813da148709963c30200f56dd1bc0871a..38e2c3c92a88a33a5a7beadbcdfc4cc5cafdae98 100644
--- a/docs/playground/hooks.md
+++ b/docs/playground/hooks.md
@@ -1,4 +1,4 @@
-# Edgeless 生命周期钩子
+# Edgeless 生命周期钩子
## 简介