fix: improve doc link navigation and tree display

- Fix link resolution with proper relative/absolute path handling
- Improve link styling with underline decoration
- Hide leaf nodes from tree, only show directories
- Fix log file path for packaged app

docs/api/rhi/opengl/vertex-array/get-id.md

@@ -0,0 +1,20 @@
+# OpenGLVertexArray::GetID
+
+```cpp
+unsigned int GetID() const
+```
+
+获取 OpenGL 顶点数组对象 ID。
+
+**返回：** `unsigned int` - VAO ID
+
+**示例：**
+
+```cpp
+unsigned int vaoID = vao.GetID();
+glBindVertexArray(vaoID);
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览