Update wiki/pages/sustainable.html

wiki/pages/sustainable.html

 {% extends "layout.html" %}
   
-{% block title %}Sustainable Development Goals{% endblock %}
+{% block title %}<b>Sustainable Development Goals</b>{% endblock %}
 {% block lead %}Describe how you have evaluated your project ideas against one or more of the SDGs.{% endblock %}
 
 {% block page_content %}