The Pipenv documentation website ( https://docs.pipenv.org/ ) seems like it may have been tampered with during deployment. The first two testimonials are links to casual sex apps. I'm not judging the apps, but the phrasing of the testimonials sound like spam.
Additionally, these testimonials do not appear in the Pipenv documentation's source code.
A screenshot of the testimonials on docs.pipenv.org can be found here.