Squash the language code blocks and fix list.md (#865)

docs/chapter_heap/top_k.md

@@ -66,74 +66,6 @@
 
 另外，该方法适用于动态数据流的使用场景。在不断加入数据时，我们可以持续维护堆内的元素，从而实现最大 $k$ 个元素的动态更新。
 
-=== "Python"
-
-    ```python title="top_k.py"
-    [class]{}-[func]{top_k_heap}
-    ```
-
-=== "C++"
-
-    ```cpp title="top_k.cpp"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "Java"
-
-    ```java title="top_k.java"
-    [class]{top_k}-[func]{topKHeap}
-    ```
-
-=== "C#"
-
-    ```csharp title="top_k.cs"
-    [class]{top_k}-[func]{TopKHeap}
-    ```
-
-=== "Go"
-
-    ```go title="top_k.go"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "Swift"
-
-    ```swift title="top_k.swift"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "JS"
-
-    ```javascript title="top_k.js"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "TS"
-
-    ```typescript title="top_k.ts"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "Dart"
-
-    ```dart title="top_k.dart"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "Rust"
-
-    ```rust title="top_k.rs"
-    [class]{}-[func]{top_k_heap}
-    ```
-
-=== "C"
-
-    ```c title="top_k.c"
-    [class]{}-[func]{topKHeap}
-    ```
-
-=== "Zig"
-
-    ```zig title="top_k.zig"
-    [class]{}-[func]{topKHeap}
-    ```
+```src
+[file]{top_k}-[class]{}-[func]{top_k_heap}
+```