Fix formatting issues

Author: mvanbeusekom

packages/url_launcher/url_launcher/lib/url_launcher.dart

@@ -109,9 +109,9 @@ Future<bool> launch(
 
 /// Checks whether the specified URL can be handled by some app installed on the
 /// device.
-/// 
+///
 /// On Android (from API 30), [canLaunch] will return `false` when the required
-/// visibility configuration is not provided in the AndroidManifest.xml file. 
+/// visibility configuration is not provided in the AndroidManifest.xml file.
 /// For more information see the [Managing package visibility](https://developer.android.com/training/basics/intents/package-visibility)
 /// article in the Android docs.
 Future<bool> canLaunch(String urlString) async {