Add separator.

Signed-off-by: Willy Sudiarto Raharjo <willysr@staff.ukdw.ac.id>

includes/courses.php

@@ -1,6 +1,7 @@
 <nav role="navigation">
   <ul>
     <li><a href="../index.php">Home</a></li>
+    <li>|</li>
     <li><a href="../tekkom-ti/">CompTech</a></li>
     <li>|</li>
     <li><a href="../os-ti/">Operating Systems</a></li>