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/set-index-buffer.md

@@ -0,0 +1,21 @@
+# OpenGLVertexArray::SetIndexBuffer
+
+```cpp
+void SetIndexBuffer(unsigned int buffer, unsigned int type)
+```
+
+设置索引缓冲区。
+
+**参数：**
+- `buffer` - OpenGL 缓冲区对象 ID
+- `type` - 索引数据类型（GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_UNSIGNED_INT）
+
+**示例：**
+
+```cpp
+vao.SetIndexBuffer(ibo, GL_UNSIGNED_INT);
+```
+
+## 相关文档
+
+- [OpenGLVertexArray](vertex-array.md) - 返回类总览