Update (react-navigation#395)

Author: uguraktas

docs/handling-iphonex.md

@@ -101,11 +101,11 @@ import { Platform } from 'react-native';
 import { SafeAreaView } from 'react-navigation';
 import DeviceInfo from 'react-native-device-info';
 
-if (Platform.OS === 'android' && Device.hasNotch()) {
+if (Platform.OS === 'android' && DeviceInfo.hasNotch()) {
   SafeAreaView.setStatusBarHeight(
     /* Some value for status bar height + notch height */
   );
 }
 ```
 
-Work is in progress on a longer term solution, see [this pull request](https://github.com/facebook/react-native/pull/20999) for more information.
+Work is in progress on a longer term solution, see [this pull request](https://github.com/facebook/react-native/pull/20999) for more information.