Unify Uni-Dock license to Apache 2.0 (#153)

Author: zhengh96

unidock_tools/LICENSE LICENSE

@@ -29,11 +29,16 @@ The benchmarks are publicly available at <https://github.com/dptech-corp/Uni-Doc
 
 
 ## Changelog
-
+- 2025-03-10: Relicense the entire repository under Apache 2.0.
 - 2024-02-29: Release [Uni-Dock v1.1](./unidock/README.md#changelog) and [Uni-Dock Tools](./unidock_tools/README.md).
 - 2023-08-21: Upload source codes of Uni-Dock.
 - 2023-08-14: Add Uni-Dock Tools to support SDF format input for vina and vinardo scoring functions.
 
+## License
+Uni-Dock is licensed under the **Apache License 2.0**.
+
+Previously, the `unidock/` directory was licensed under LGPL 3, but as of **March 10, 2025**, the entire repository has been relicensed under Apache 2.0 for better consistency and compatibility.
+
 ## Citation
 
 If you used Uni-Dock in your work, please cite: