Fix pull request URLs in changelog
{%- if pulls %}
### {{ change_type }}
{%- for pull_request in pulls %}
-- {{ pull_request.title }} ([#{{ pull_request.number }}]({{ pull_request.url }}))
+- {{ pull_request.title }} ([#{{ pull_request.number }}]({{ pull_request.html_url }}))
{%- endfor -%}
{% endif -%}
{% endfor -%}
