search bar is supported on Android

Author: kligarski

versioned_docs/version-7.x/native-stack-navigator.md

@@ -487,7 +487,7 @@ Example:
 
 #### `headerSearchBarOptions`
 
-Options to render a native search bar on iOS. Search bars are rarely static so normally it is controlled by passing an object to `headerSearchBarOptions` navigation option in the component's body.
+Options to render a native search bar. Search bars are rarely static so normally it is controlled by passing an object to `headerSearchBarOptions` navigation option in the component's body.
 
 You also need to specify `contentInsetAdjustmentBehavior="automatic"` in your `ScrollView`, `FlatList` etc. If you don't have a `ScrollView`, specify `headerTransparent: false`.