Update _config.yml

Author: jukent

_config.yml

@@ -7,6 +7,7 @@ logo: notebooks/images/logos/pythia_logo-white-rtext.svg
 email: [email protected]
 copyright: '2022'
 
+description: A cookbook for working with AWS-served HRRR model output data.
 thumbnail: thumbnail.png
 tags:
   domains: