fix: 修复链表文章 mermaid 语法错误

docs/algorithm/linked-list-top10.md

@@ -1016,10 +1016,10 @@ func main() {
 
 ```mermaid
 graph LR
-    subgraph 输入
+    subgraph Input
         A["1"] --> B["2"] --> C["3"] --> D["4"] --> E["5"]
     end
-    subgraph 输出（k=2）
+    subgraph "Output k=2"
         A2["2"] --> B2["1"] --> C2["4"] --> D2["3"] --> E2["5"]
     end
 ```