Improve English

See http://en.wikipedia.org/wiki/Machine-readable_data.

weblate/html/subproject.html

@@ -81,7 +81,7 @@
 <div id="tools">
 <ul>
 <li><a href="{% url 'show_source' project=object.project.slug subproject=object.slug %}">{% trans "Source strings review" %}</a></li>
-<li><a href="{% url 'data_project' project=object.project.slug %}">{% trans "Machine readable data" %}</a></li>
+<li><a href="{% url 'data_project' project=object.project.slug %}">{% trans "Machine-readable data" %}</a></li>
 </ul>
 </div>