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-list/set-vertex-buffer.md

@@ -0,0 +1,19 @@
+# D3D12CommandList::SetVertexBuffer
+
+```cpp
+void SetVertexBuffer(uint32_t slot, void* buffer, uint64_t offset, uint32_t stride) override;
+```
+
+设置单个顶点缓冲区。
+
+**参数：**
+- `slot` - 顶点缓冲区槽位
+- `buffer` - 缓冲区指针
+- `offset` - 缓冲区偏移
+- `stride` - 顶点 stride
+
+**复杂度：** O(1)
+
+## 相关文档
+
+- [D3D12CommandList 总览](command-list.md) - 返回类总览