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/d3d12/command-allocator/is-ready.md

@@ -0,0 +1,15 @@
+# D3D12CommandAllocator::IsReady
+
+```cpp
+bool IsReady() const;
+```
+
+检查命令分配器是否准备就绪。
+
+**返回：** 分配器是否准备就绪
+
+**复杂度：** O(1)
+
+## 相关文档
+
+- [D3D12CommandAllocator 总览](command-allocator.md) - 返回类总览