updating app screenshots

Author: tibbi

README.md

@@ -15,7 +15,7 @@ This app is just one piece of a bigger series of apps. You can find the rest of
 
 <div style="display:flex;">
 <img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app.png" width="30%">
-<img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app_2.png" width="30%">
+<img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app_2.jpg" width="30%">
 <img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app_3.png" width="30%">
 </div>