minor formatting tweaks

Author: gavinsdavies

_episodes/00-Local-Setup-For-Local-Build.md

@@ -14,7 +14,7 @@ keypoints:
 ## Instructions for local setup to build your lessons - very useful
 
 
-> #### Note:  
+> ## Carpentries instructions 
 > The Carpentries provide excellent instructions and examples at: [https://carpentries.github.io/lesson-example/setup.html](https://carpentries.github.io/lesson-example/setup.html).  
 > Carpentries has moved on to an 'R' based system which we are not using. We are still using this older format.  
 {: .callout}
@@ -24,7 +24,6 @@ keypoints:
 
 Follow the instructions [https://carpentries.github.io/lesson-example/setup.html#setup-for-local-rendering-of-the-lessons-optional](https://carpentries.github.io/lesson-example/setup.html#setup-for-local-rendering-of-the-lessons-optional) for setup on your local machine - in principle this is optional but in practice it is really helpful.  You are going to need ruby and pyYAML.  I used conda on a mac but they have instructions for Windows, Mac and UNIX. 
 
-> #### Alert!!! 
+> ## Alert 
 > At this point you should stop following their instructions and start using our github template to avoid overwriting DUNE specific items. 
-{: .callout}
-
+{: .caution}