Update license file references in README

Changed license file links from LICENSE.md to LICENSE for consistency across documentation.

Author: kwan3854

README.md

@@ -521,4 +521,4 @@ export class MyHelloServiceImpl extends HelloServiceBase {
 ```
 
 ## License
-This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details.
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

README_ko.md

@@ -478,4 +478,4 @@ export class MyHelloServiceImpl extends HelloServiceBase {
 ```
 
 ## License
-This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details.
+This project is licensed under the MIT License - see the [LICENSE.md](LICENSE) file for details.