fix(federatedfilesharing): fix notification typo

Signed-off-by: skjnldsv <skjnldsv@protonmail.com>

apps/federatedfilesharing/lib/Notifications.php

@@ -398,7 +398,7 @@ class Notifications {
 					$fields['remoteId'],
 					[
 						'sharedSecret' => $fields['token'],
-						'messgage' => 'file is no longer shared with you'
+						'message' => 'file is no longer shared with you'
 					]
 				);
 				return $this->federationProviderManager->sendNotification($remoteDomain, $notification);