Bugfix: typo in class name UploadManager

lib/obs_list_upload_page.dart

@@ -63,7 +63,7 @@ class _ObsListUploadPageState extends State<ObsListUploadPage> {
                   trip.overtakeEvents.add(event);
                   trip.overtakeEvents.add(event);
 
-                  UploadManger uploadManger = UploadManger();
+                  UploadManager uploadManger = UploadManager();
 
                   uploadManger.uploadTrip(trip);
                 },