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/fence/get-native-handle.md

@@ -0,0 +1,15 @@
+# RHIFence::GetNativeHandle
+
+```cpp
+virtual void* GetNativeHandle() = 0;
+```
+
+获取原生 API 句柄。
+
+**返回：** 原生栅栏句柄
+
+**复杂度：** O(1)
+
+## 相关文档
+
+- [RHIFence 总览](fence.md) - 返回类总览