docs(readme): 📝 readme加入License說明

Author: hankz1108

readme.md

@@ -6,9 +6,13 @@ Laravel Plus API` is inspired by the [marcin-orlowski/laravel-api-response-build
 - PHP ^7.4|^8.0
 - Laravel >= ^7.0|^8.0|^9.0|^10.0|^11.0
 
-## Installation
+## Documentation
 ### For Laravel 7~10
 [documentation](docs/en/7_10/index.md)
 
 ### For Laravel 11
 [documentation](docs/en/11/index.md)
+
+## License
+
+[MIT License](https://github.com/hankz1108/laravel-plus-api/blob/main/LICENSE) © 2024 [Hankz](https://github.com/hankz1108)