diff --git a/docs/zh-cn/diagrams.md b/docs/zh-cn/diagrams.md
index beac4163..dc4846c3 100644
--- a/docs/zh-cn/diagrams.md
+++ b/docs/zh-cn/diagrams.md
@@ -97,7 +97,7 @@ blockdiag {
     { name: "Request", wave: "0.1..0|1.0" },
     {},
     { name: "Acknowledge", wave: "1.....|01." },
-  ];
+  ]
 }
 ```
 ````