l10n: Correct spelling

apps/settings/templates/settings/admin/additional-mail.php

@@ -106,7 +106,7 @@ $mail_sendmailmode = [
 
 		<p>
 			<label for="mail_from_address"><?php p($l->t('From address')); ?></label>
-			<input type="text" name="mail_from_address" id="mail_from_address" placeholder="<?php p($l->t('mail'))?>"
+			<input type="text" name="mail_from_address" id="mail_from_address" placeholder="<?php p($l->t('Email'))?>"
 				   value="<?php p($_['mail_from_address']) ?>" />@
 			<input type="text" name="mail_domain" id="mail_domain" placeholder="example.com"
 				   value="<?php p($_['mail_domain']) ?>" />