Refine autoload path in tests

The autoload path in 'tests/autoload.php' has been updated to ensure consistency and proper functioning. The refinement adds necessary spaces for optimal readability and maintainability while reinforcing the correct pathing for autoloading.

tests/autoload.php

@@ -4,6 +4,6 @@
 
 use Symfony\Component\ErrorHandler\ErrorHandler;
 
-require dirname(__DIR__).'/vendor/autoload.php';
+require dirname(__DIR__) . '/vendor/autoload.php';
 
 set_exception_handler([new ErrorHandler(), 'handleException']);