forked from kofal.net/zmk
* docs(feat): Provide example of PIO SPI for RGB underglow * docs(feat): further generalize RGB information * docs: use nice_nano_v2 for board-specific shield config example Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com> --------- Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>