Update GettingStarted.md

Author: mdjastrzebski

website/docs/GettingStarted.md

@@ -33,7 +33,7 @@ yarn add --dev @testing-library/react-native
 npm install --save-dev @testing-library/react-native
 ```
 
-This library has a peerDependencies listing for `react-test-renderer` and, of course, `react`. Make sure to install them too!
+This library has a `peerDependencies` listing for `react-test-renderer`. Make sure that your `react-test-renderer` version matches exactly your `react` version.
 
 :::info
 In order to properly use helpers for async tests (`findBy` queries and `waitFor`) you need at least React >=16.9.0 (featuring async `act`) or React Native >=0.61 (which comes with React >=16.9.0).