Update lib/Notifications/Notifier.php

Co-authored-by: Pytal <24800714+Pytal@users.noreply.github.com>
Signed-off-by: Jérôme Herbinet <33763786+Jerome-Herbinet@users.noreply.github.com>

lib/Notifications/Notifier.php

@@ -78,7 +78,7 @@ public function prepare(INotification $notification, string $languageCode): INot
 				$notification
 					->setRichSubject($l->t('Guest conversion failed'))
 					->setRichMessage(
-						$l->t('Failed to convert guest "{guest}" account to "{user}" account'),
+						$l->t('Failed to convert guest {guest} account to {user} account'),
 						$this->getRichMessageParams($params['source'], $params['target']),
 					);
 				return $notification;