Update head-menu.html

Author: Cobra-Bitcoin

_includes/layout/base/head-menu.html

@@ -26,6 +26,7 @@
          page.lang == 'sr' or
          page.lang == 'sv' or
          page.lang == 'uk' or
+         page.lang == 'hy' or
          page.lang == 'zh_CN'
       %}
       <li{% if page.id == 'bitcoin-paper' %} class="active"{% endif %}><a href="/{{ page.lang }}/{% translate bitcoin-paper url %}">{% translate menu-white-paper layout %}</a></li>