all-the-icons.el: move rkt (Racket) to "Lisps" and add scrbl (Racket Scribble)
all-the-icons.el: move rkt (Racket) to "Lisps" and add scrbl (Racket Scribble)

Signed-off-by: Maciej Barć <67033a83851fae137d6c6a8996218406fe4a5b7b@riseup.net>

domtronn/all-the-icons.el,domtronn/all-the-icons.el,domtronn/all-the-icons.el,domtronn/all-the-icons.el,domtronn/all-the-icons.el