Fix train page: don't show error if no services are found

src/routes/train/+page.svelte

@@ -88,7 +88,7 @@
         const url = `${getApiUrl()}/api/v2/timetable/train/${formattedDate}/${searchType}/${id}`;
         try {
             const res = await fetch(url, options);
-            if (res.status == 200) {
+            if (res.status < 300) {
                 let services = await res.json();
                 if (!services.length) {
                     error = true;