Edit sub-templates not work

[salicius]

I want to edit pagination feature and i create a folder named pagination and put inside it a file called numbers.html. Unfortunately changes inside my template not showing, I tried putting the extends but even with it doesn't work.
Can you help me ?

{% extends "rest_framework/pagination/numbers.html" %}

<ul class="pagination">
  {% if previous_url %}
  <li>
    <a href="{{ previous_url }}" aria-label="Previous">
      <span aria-hidden="true">&laquo;</span>
    </a>
  </li>
  {% else %}
  <li class="disabled">
    <a href="#" aria-label="Previous">
      <span aria-hidden="true">&laquo;</span>
    </a>
  </li>
  {% endif %} {% for page_link in page_links %} {% if page_link.is_break %}
  <li class="disabled">
    <a href="#"><span aria-hidden="true">&hellip;</span></a>
  </li>
  {% else %} {% if page_link.is_active %}
  <li class="active">
    <a href="{{ page_link.url }}">{{ page_link.number }}</a>
  </li>
  {% else %}
  <li class="">
    <a href="{{ page_link.url }}">{{ page_link.number }}</a>
  </li>
  {% endif %} {% endif %} {% endfor %} {% if next_url %}
  <li>
    <a href="{{ next_url }}" aria-label="Next">
      <span aria-hidden="true">&raquo;</span>
    </a>
  </li>
  {% else %}
  <li class="disabled">
    <a href="#" aria-label="Next">
      <span aria-hidden="true">&raquo;</span>
    </a>
  </li>
  {% endif %}

  <li class="">
    <a href="/">testtt</a>
  </li>

</ul>