Fix invalid tag h3, should have been div

Author: trolando

subscribe/templates/subscribe/index.html

@@ -5,7 +5,7 @@
 <div class='formpart'><p><a href="admin/">Admin pagina </a></p></div>
 {% endif %}
 <div class='formpart'>
-  <div class='title'>Evenementen</h3>
+  <div class='title'>Evenementen</div>
   {% if events %}
   <ul style="margin-top: 1em;">
   {% for event in events %}