apache rewrite without 301 redirect

/etc/apache2/conf.d/domaincheck.conf

AddDefaultCharset UTF-8
Alias /domainchecker "/srv/www/htdocs/domainchecker"
<Location "/domainchecker">
    DirectoryIndex index.php
    RewriteEngine On
    RewriteBase /
    RewriteCond %{REQUEST_FILENAME} -d
    RewriteRule ^(.+[^/])$ $1/ [L]
</Location>

<Directory "/srv/www/htdocs/domainchecker">
    DirectorySlash Off
    Options -Indexes +FollowSymLinks
    Require all granted
</Directory>