docs: small updates

Rewording and two screenshots were in wrong order.

Author: mortend

README.md

@@ -101,7 +101,7 @@ const randomColor = () => {
 
 See [getting started](docs/getting-started.md) for information on how to set up your Unity project and React Native app.
 
-See [Unity artifacts](docs/unity-artifacts.md) for information on how to build your Unity exports in Android Studio and Xcode.
+See [Unity artifacts](docs/unity-artifacts.md) for information on how to build your Unity artifacts in Android Studio and Xcode.
 
 See the included [Unity project](unity) and [React Native app](example) for working examples.
 

docs/img/xcode3.png

@@ -8,7 +8,7 @@ Unity artifacts must be added before building the React Native app.
 
 * `unity/android/unityLibrary-release.aar`
 
-> Edit `build.gradle` if you need to switch between `debug` and `release` configurations.
+> The filename of the AAR can be edited in `build.gradle` located in the same directory, to switch between `debug` and `release` variants of your Unity artifact.
 
 ### iOS