Fix duplicate ID on settings page

Signed-off-by: Joas Schilling <coding@schilljs.com>

Author: nickvergessen

src/views/UserSettings.vue

@@ -25,7 +25,7 @@
 				<strong v-if="!config.is_email_set">{{ t('notifications', 'You need to set up your email address before you can receive notification emails.') }}</strong>
 			</div>
 			<p>
-				<label for="notify_setting_batchtime" class="notification-frequency__label">
+				<label for="notification_reminder_batchtime" class="notification-frequency__label">
 					{{ t('notifications', 'Send email reminders about unhandled notifications after:') }}
 				</label>
 				<select