docs: fix typos in readme

Author: uerceg

README.md

@@ -1,7 +1,7 @@
 # Adjust SDK for Unity
 
-This is the [Adjust](https://adjust.com)™  SDK for iOS. Documentation is available on our [developer docs](https://dev.adjust.com/en/sdk/unity/?version=v5).
+This is the [Adjust](https://adjust.com)™  SDK for Unity. Documentation is available on our [developer docs](https://dev.adjust.com/en/sdk/unity/?version=v5).
 
 ## License
 
-Distributed under the [`MIT license`](MIT-LICENSE).
+Distributed under the [`MIT license`](LICENSE).