added localizations for content

lib/pages/landing_page.dart

@@ -25,7 +25,7 @@ class _LandingPageState extends State<LandingPage> {
   void initState() {
     super.initState();
     WidgetsBinding.instance.addPostFrameCallback((_) async {
-      await ContentProvider.init();
+      await ContentProvider.init(context);
       setState(() => loadingDone = true);
     });
   }