Update RELEASE.md

RELEASE.md

@@ -19,4 +19,6 @@ To then bundle a release run the following command on your branch:
 cd android && ./gradlew bundleRelease
 ```
 
-This command creates an `app.aab` file in the folder `/android/app/build/outputs/bundle/release`.
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+This command creates an `app.aab` file in the folder `/android/app/build/outputs/bundle/release`.
+
+[More on Android App Bundle](https://blog.swmansion.com/make-your-react-native-app-3x-smaller-44c993eda2c9)
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