Fix path to the css/timeline.css static file.

Author: Kami

codespeed/templates/codespeed/timeline.html

@@ -6,7 +6,7 @@
 
 {% block extra_head %}
 {{ block.super }}
-  <link rel="stylesheet" type="text/css" href="{% static '/css/timeline.css' %}" />
+  <link rel="stylesheet" type="text/css" href="{% static 'css/timeline.css' %}" />
   <link rel="stylesheet" type="text/css" href="{% static 'js/jqplot/jquery.jqplot.min.css' %}" />
 {% endblock %}