netbox-community-netbox/netbox/utilities/templates/tabs/model_view_tabs.html

{% for tab in tabs %}
  <li role="presentation" class="nav-item">
    <a href="{{ tab.url }}" class="nav-link{% if tab.is_active %} active{% endif %}">
      {{ tab.label }}
      {% if tab.badge_value %}{% badge tab.badge_value %}{% endif %}
    </a>
  </li>
{% endfor %}