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/render-target-view/clear.md

@@ -0,0 +1,17 @@
+# OpenGLRenderTargetView::Clear
+
+```cpp
+void Clear(float r, float g, float b, float a);
+```
+
+清除渲染目标视图。
+
+**参数：**
+- `r` - 红色分量
+- `g` - 绿色分量
+- `b` - 蓝色分量
+- `a` - Alpha 分量
+
+## 相关文档
+
+- [OpenGLRenderTargetView 总览](render-target-view.md) - 返回类总览