Restructure

Author: richelbilderbeek

docs/prereqs.rst

@@ -19,10 +19,13 @@ See below for links to useful material if you need a refresher before the course
 **PANDAS** link
 
 - More important is how to work in Linux and especially Bash
+
 
 Linux
 #####
 
+<!-- RB: make dropdow box -->
+
 - some familiarity with the LINUX command line (recordings from HPC2N:s Linux intro and UPPMAX Intro course), 
 
     - `Short introduction <https://uppsala.instructure.com/courses/67267/pages/using-the-command-line-bash?module_item_id=455632>`_