fix LICENSE by https://www.apache.org/licenses/LICENSE-2.0.txt (#6277)
fix LICENSE by https://www.apache.org/licenses/LICENSE-2.0.txt (#6277)

* fix LICENSE by https://www.apache.org/licenses/LICENSE-2.0.txt

* Update LICENSE
alibaba/nacos,alibaba/nacos,alibaba/nacos,alibaba/nacos