Update docs/user-interaction.mdx

Co-authored-by: SEHI L'YI <[email protected]>

docs/user-interaction.mdx

@@ -177,7 +177,7 @@ Mouse events can be enabled in Gosling by defining a `MouseEvents` object in the
 
 You can use the [JavaScript API](js-api#subscribe) to subscribe to the mouse-related events, i.e., "mouseOver", "rangeSelect", and "click", to create custom interactions with the visualization.
 Refer to [gosling-react-example](https://github.com/gosling-lang/gosling-react-example) to see how mouse events can be used in various use cases.
-Here is an example of a track with a range selection enabled:
+Here is an example of a track with a range selection enabled that enables selecting a genomic range using the click-and-drag interaction after pressing the Alt key:
 
 <img src='/img/doc_images/mouse_interaction.png' width='700' />