From the GitHub page, it looks like Divio is actually a fork of Diátaxis. divio/diataxis-documentation-framework is forked from evildmp/diataxis-documentation-

From the GitHub page, it looks like Divio is actually a fork of Diátaxis. divio/diataxis-documentation-framework is forked from evildmp/diataxis-documentation-framework, and evildmp is Daniele Procida, the creator of the latter repository and the maintainer of diataxis.fr.