Update _episodes/02-installation.md

Co-authored-by: SarahAlidoost <[email protected]>

Author: rswamina

_episodes/02-installation.md

@@ -32,12 +32,10 @@ associated software such as GitHub and Conda.
 1. If you have access to a server where ESMValTool is already installed
 as a module, for e.g., the [CEDA JASMIN](https://help.jasmin.ac.uk/article/4955-community-software-esmvaltool)
 server, you can simply load the module with the following:
- ```bash
- module load esmvaltool
- ```
-
+~~~bash
+module load esmvaltool
+~~~
 After loading ``esmvaltool``, we can start using ESMValTool. Please see the [next lesson]({{ page.root }}{% link _episodes/03-configuration.md %}). 
- 
 2) If you would like to install ESMValTool as a conda package, then this lesson 
  will tell you how!