updated localstore collection to global constant

lib/api/mhsl/customTimetableEvent/get/getCustomTimetableEventCache.dart

@@ -9,7 +9,7 @@ class GetCustomTimetableEventCache extends RequestCache<GetCustomTimetableEventR
   GetCustomTimetableEventParams params;
 
   GetCustomTimetableEventCache(this.params, {onUpdate, renew}) : super(RequestCache.cacheMinute, onUpdate, renew: renew) {
-    start('MarianumMobile', 'customTimetableEvents');
+    start('customTimetableEvents');
   }
 
   @override