CloneTest: Format Docs

Author: Timm Ortloff

Diff for: tests/CloneTest.php

@@ -214,9 +214,9 @@ protected function getCallbackThis(callable $callback): ?object
 
     protected function registerCallbackFor(
         BaseHtmlElement $element,
-        string          $name,
-        ?callable       $callback,
-        ?callable       $setterCallback = null
+        string $name,
+        ?callable $callback,
+        ?callable $setterCallback = null
     ): void
     {
         $element->getAttributes()->registerAttributeCallback($name, $callback, $setterCallback);