Update self-update.php

Author: JulianPrieber

config/self-update.php

@@ -73,7 +73,7 @@
         ],
         'http' => [
             'type'                 => 'http',
-            'repository_url'       => env('SELF_UPDATER_REPO_URL', 'https://update.littlelink-custom.com/'),
+            'repository_url'       => env('SELF_UPDATER_REPO_URL', $userver),
             'pkg_filename_format'  => env('SELF_UPDATER_PKG_FILENAME_FORMAT', '_VERSION_'),
             'download_path'        => env('SELF_UPDATER_DOWNLOAD_PATH', '/tmp'),
             'private_access_token' => env('SELF_UPDATER_HTTP_PRIVATE_ACCESS_TOKEN', ''),