Added some minor changes to the contents (#25)

* Added some minor changes to the contents

Suggestions for file contents

* Correct spelling

Co-authored-by: Bouwe Andela <b.andela@esciencecenter.nl>

Author: ledm

_episodes/06-creating-a-diagnostic-script.md

@@ -13,3 +13,7 @@ FIXME
 
 {% include links.md %}
 
+Important part here is to introduce the standard tools that allow users to access ESMValTool settings configs.
+
+
+This file should be renamed to advanced: creating a diagnostic