made player (nearly) html syntax error free

templates/lecture.html

@@ -19,7 +19,7 @@
 {% block content %}
 <div class="panel panel-default">
 	<div class="panel-heading">
-		<span class="panel-title"><strong><a href="{{url_for('course', handle=course.handle)}}#lecture-{{lecture.id}}">{{ course.title }}</strong></a>: {{ lecture.title}}</span>
+		<span class="panel-title"><strong><a href="{{url_for('course', handle=course.handle)}}#lecture-{{lecture.id}}">{{ course.title }}</a></strong>: {{ lecture.title}}</span>
 	</div>
 	<div class="panel-body">
 		<div class="row" style="padding: 0px;">