Update PHPDoc annotation in lib/public/Mail/IMessage.php

Co-authored-by: Christoph Wurst <ChristophWurst@users.noreply.github.com>
Signed-off-by: Bennet B. <bennet0496@users.noreply.github.com>

Author: bennet0496

lib/public/Mail/IMessage.php

@@ -98,7 +98,7 @@ public function useTemplate(IEMailTemplate $emailTemplate): IMessage;
 	 * Add the Auto-Submitted header to the email, preventing most automated
 	 * responses to automated messages.
 	 *
-	 * @param string $value (one of AutoSubmittedValue::NO, AutoSubmittedValue::AUTO_GENERATED, AutoSubmittedValue::AUTO_REPLIED)
+	 * @param AutoSubmittedValue::* $value (one of AutoSubmittedValue::NO, AutoSubmittedValue::AUTO_GENERATED, AutoSubmittedValue::AUTO_REPLIED)
 	 * @return IMessage
 	 * @since 26.0.0
 	 */