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/swap-chain/shutdown.md

@@ -0,0 +1,13 @@
+# RHISwapChain::Shutdown
+
+```cpp
+virtual void Shutdown() = 0;
+```
+
+关闭交换链，释放所有相关资源。
+
+**复杂度：** O(n) - 取决于管理的缓冲区数量
+
+## 相关文档
+
+- [RHISwapChain 总览](swap-chain.md) - 返回类总览