Update documentation

README.md

@@ -19,7 +19,7 @@ require_once __DIR__ . '/../../vendor/autoload.php';
 
 use GisoStallenberg\FileServing\FileServer;
 
-$fileserver = new FileServer('../serve-me/', 'serve-it/');
+$fileserver = new FileServer('../../serve-me/', 'serve-it/');
 $fileserver->serve(); // will server http://example.com/serve-it/example.txt when ../serve-me/example.txt exists, gives a 404 otherwise
 ```
 
@@ -30,11 +30,11 @@ require_once __DIR__ . '/../../vendor/autoload.php';
 use GisoStallenberg\FileServing\FileServer;
 use Symfony\Component\HttpFoundation\Response;
 
-$fileserver = new FileServer('../serve-me/', 'serve-it/');
+$fileserver = new FileServer('../../serve-me/', 'serve-it/');
 $response = $fileserver->getResponse(); // do not serve yet
 
 if ($response->getStatusCode() === Response::HTTP_NOT_FOUND) {
-    $fileserver = new FileServer('../serve-other-dir/', 'serve-it/'); // check another directory
+    $fileserver = new FileServer('../../erve-other-dir/', 'serve-it/'); // check another directory
     $response = $fileserver->getResponse();
 }