Update platform-includes/configuration/auto-session-tracking/flutter.mdx

Co-authored-by: Alex Krawiec <[email protected]>

Author: buenaflor

platform-includes/configuration/auto-session-tracking/flutter.mdx

@@ -2,7 +2,7 @@ To benefit from the health data, you must use at least version 4.0.0 of the Flut
 
 #### Session Timeout
 
-By default, the session is terminated once the application is in the background for more than `30 seconds`. You can change the default timeout with the option `autoSessionTrackingInterval` to a `Duration` of your choosing.
+By default, the session is terminated once the application is in the background for more than `30 seconds`. You can change this default by setting the `autoSessionTrackingInterval` option to a `Duration` of your choosing.
 
 ```dart
 SentryFlutter.init((options) {