Fix a URL bug relating to error screens
<a href="{{ gold_detail }}">{% trans "Read the Docs Gold" %}</a>
</li>
<li>
- <a href='{% url "donate" %}'>{% trans "Donate" %}</a>
+ {% url "donate" as donate_url %}
+ <a href='{{ donate_url }}'>{% trans "Donate" %}</a>
</li>
</ul>
</div>
