Tests: Fix 404 at css selector test

Fixes css/selectors/focus-visible-017-2.html

Tests/LibWeb/Text/input/wpt-import/css/selectors/focus-visible-017-2.html

@@ -49,7 +49,7 @@
 <figure tabindex="0">figure</figure>
 <form tabindex="0">form</form>
 <hr tabindex="0" />
-<img tabindex="0" src="/images/green.png" />
+<img tabindex="0" src="../../images/green.png" />
 <label tabindex="0">label</label>
 <li tabindex="0">li</li>
 <mark tabindex="0">mark</mark>