Fix a bug while creating initial symlinks

src/Handler.php

@@ -143,7 +143,7 @@ class Handler extends BaseHandler {
 
     // Link Drupal site's config directory.
     if (!$fs->exists($webRoot . '/sites/default/files/config')) {
-      $rel = substr($fs->makePathRelative($projectRoot . '/config/default', $projectRoot . '/files/default/files'), 3, -1);
+      $rel = substr($fs->makePathRelative($projectRoot . '/config/default', $projectRoot . '/files/default/files/config'), 3, -1);
       $fs->symlink($rel, $webRoot . '/sites/default/files/config');
     }