fix: Licence & Contributing url issue

Author: Mohammad Javed

README.md

@@ -17,8 +17,8 @@ Visit https://angularui.org to view the documentation.
 
 ## Contributing
 
-Please read the [contributing guide](/CONTRIBUTING.md).
+Please read the [contributing guide](https://github.com/angularui-org/angularui/blob/main/CONTRIBUTING.MD).
 
 ## License
 
-Licensed under the [MIT license](/LICENSE.md).
+Licensed under the [MIT license](https://github.com/angularui-org/angularui/blob/main/LICENSE).