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/command-list/set-viewport.md

@@ -0,0 +1,27 @@
+# RHICommandList::SetViewport
+
+```cpp
+virtual void SetViewport(const Viewport& viewport) = 0;
+```
+
+设置视口。
+
+**参数：**
+- `viewport` - 视口结构体
+
+**示例：**
+
+```cpp
+Viewport vp;
+vp.topLeftX = 0;
+vp.topLeftY = 0;
+vp.width = 1280;
+vp.height = 720;
+vp.minDepth = 0.0f;
+vp.maxDepth = 1.0f;
+cmdList->SetViewport(vp);
+```
+
+## 相关文档
+
+- [RHICommandList 总览](command-list.md) - 返回类总览