Update styling.md

docs/docs/styling.md

       topBar: {
         title: {
           largeTitle: false,
-          title: 'My Screen'
+          text: 'My Screen'
         },
         drawBehind: true,
         visible: false,
 
 * iOS - follow this [guide](https://medium.com/@dabit3/adding-custom-fonts-to-react-native-b266b41bff7f)
 
-All supported styles are defined [here](https://github.com/wix/react-native-controllers#styling-navigation). There's also an example project there showcasing all the different styles.
+All supported styles are defined [here](https://github.com/wix/react-native-controllers#styling-navigation). There's also an example project there showcasing all the different styles.