Summary:
The first code block already uses the new `connectionChange` event instead of
the deprecated `change` event, so change this example code block as well to use
the new event.
I came across this while upgrading my RN version. In the debug-console I saw a deprecation warning, despite I was using the example-code. Looking at the source, I saw the example code block still used the deprecated event, so update it to use the new one.
Closes https://github.com/facebook/react-native/pull/16357
Differential Revision: D6054428
Pulled By: hramos
fbshipit-source-id: 72ef1a79ece7494cda3773461a740dbbdf383e7e