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/buffer/set-state.md

@@ -0,0 +1,22 @@
+# RHIBuffer::SetState
+
+```cpp
+virtual void SetState(ResourceStates state) = 0;
+```
+
+设置资源状态。
+
+**参数：**
+- `state` - 新的资源状态
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+buffer->SetState(ResourceStates::VertexAndConstantBuffer);
+```
+
+## 相关文档
+
+- [RHIBuffer 总览](buffer.md) - 返回类总览