Category description field

I would like to suggest adding a category description field to show small information/instructions about the files in a particular category.
Attaching a screenshot on how it should look. I am using gdd theme with custom styling in the screenshot.
The category name is sometimes not enough when you need to provide some special instruction/disclaimer/warning/notes to users about the files in a particular category. So, a category description field below the category title would be a nice addition.