Merge pull request meteor#14025 from imongithubnow/patch-1

Update app.md to fix example value for a preference

Author: nachocodoner

v3-docs/docs/api/app.md

@@ -57,7 +57,7 @@ App.launchScreens({
 });
 
 // Set PhoneGap/Cordova preferences.
-App.setPreference('BackgroundColor', '0xff0000ff');
+App.setPreference('BackgroundColor', '#000000ff');
 App.setPreference('HideKeyboardFormAccessoryBar', true);
 App.setPreference('Orientation', 'default');
 App.setPreference('Orientation', 'all', 'ios');