fix(CS): Prepare path to config

Signed-off-by: Joas Schilling <coding@schilljs.com>

.php-cs-fixer.dist.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-require_once './vendor/autoload.php';
+require_once './vendor-bin/csfixer/vendor/autoload.php';
 
 use Nextcloud\CodingStandard\Config;