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/device/create-fence.md

@@ -0,0 +1,29 @@
+# RHIDevice::CreateFence
+
+```cpp
+virtual RHIFence* CreateFence(const FenceDesc& desc) = 0;
+```
+
+创建同步栅栏，用于 CPU/GPU 同步。
+
+**参数：**
+- `desc` - 栅栏描述符，包含初始值和标志
+
+**返回：** 新创建的栅栏指针，失败返回 `nullptr`
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+FenceDesc fenceDesc;
+fenceDesc.initialValue = 0;
+fenceDesc.flags = 0;
+
+RHIFence* fence = device->CreateFence(fenceDesc);
+```
+
+## 相关文档
+
+- [RHIDevice 总览](device.md) - 返回类总览
+- [RHIFence](../fence/fence.md) - 栅栏类