Add content below each Category

Hi,
Does anybody know if it’s possible to add brief content below each Product Category on the Shop page, much like a caption.
I would like to add some text below each Product Category on the Shop page (like on this site http://surreyeventhire.com/). For example, below the Furniture product category, is some text that reads “Banquet chairs, Chiavari chairs…”.

This is important for usability and SEO.

Thanks

Steve

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