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/opengl/device/get-window.md

@@ -0,0 +1,22 @@
+# OpenGLDevice::GetWindow
+
+```cpp
+GLFWwindow* GetWindow() const
+```
+
+获取关联的 GLFW 窗口指针。
+
+**返回：** `GLFWwindow*` - GLFW 窗口指针
+
+**示例：**
+
+```cpp
+GLFWwindow* window = device.GetWindow();
+if (window) {
+    glfwSetWindowTitle(window, "New Title");
+}
+```
+
+## 相关文档
+
+- [OpenGLDevice](device.md) - 返回类总览