update search bar ScrollView contentInsetAdjustmentBehavior requirement

Author: kligarski

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

@@ -1177,7 +1177,7 @@ Example:
 
 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`.
+On iOS, you also need to specify `contentInsetAdjustmentBehavior="automatic"` in your `ScrollView`, `FlatList` etc. If you don't have a `ScrollView`, specify `headerTransparent: false`.
 
 Example: