docs: update resources API docs

docs/api/resources/material/get-path.md

@@ -0,0 +1,24 @@
+# Material::GetPath
+
+```cpp
+const Containers::String& GetPath() const override;
+```
+
+获取材质资源的路径。
+
+**返回：** 资源路径字符串的引用
+
+**线程安全：** ✅
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+ResourceHandle<Material> mat = ResourceManager::Get().Load<Material>("materials/pbr.mat");
+const String& path = mat->GetPath();
+```
+
+## 相关文档
+
+- [Material](material.md) - 返回类总览