mod_firewall: Fix to find scripts when installed with plugin installer Extra resources are stored in a different path by luarocks, not alongside the code as this code assumed. Thanks eTaurus

<tr>
  <td colspan="2">
    <script src="https://hcaptcha.com/1/api.js" async defer></script>
    <div class="h-captcha" data-sitekey="{captcha_public_key}"></div>
  </td>
</tr>