Update README

Author: holmberd

README.md

@@ -84,10 +84,10 @@ Set to disable virtualization (the `onVisibleRangeChange` callback will still be
 
 ### Methods
 
-### `resetOnIndex(index: number = 0, shouldUpdate: boolean = true): void`
+#### `resetOnIndex(index: number = 0, shouldUpdate: boolean = true): void`
 Rebuilds the items cached scrollOffset index on and after the specified index when called. Useful when the size of an item changes in your list, e.g. expanded/collapsed. By default calling this method will trigger an update, use `shouldUpdate` to override this behaviour.
 
-### `scrollToItem(index: number): void`
+#### `scrollToItem(index: number): void`
 Scrolls to the specified item index when called. (The item aligns to the beginning of the list).
 
 ## Browser Support