docs: fix filename

Author: kenjis

README.md

@@ -79,7 +79,7 @@ whether you can code, write documentation, or help find bugs, all contributions
 
 ## License
 
-This project is licensed under the MIT License - see the [LICENSE.md](LICENSE) file for details.
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
 
 ## Acknowledgements