public: add spacing between past donors and a past donor

Signed-off-by: Christian Heusel <christian@heusel.eu>

templates/public/donate.html

@@ -84,6 +84,8 @@
 
     <h3>Past donors</h3>
 
+    <p><a href="http://www.dotcom-monitor.com/" title="Dotcom-Monitor">Dotcom-Monitor</a></p>
+
     <div id="donor-list">
         <ul>
 {% for donor in donors %}