The `dnf module` subcommand is not currently covered in https://dnf.readthedocs.io/en/latest/command_ref.html The syntax for selecting modules and streams is also not covered under https://dnf.readthedocs.io/en/latest/command_ref.html#install-command Without this foundation to build on as reference documentation, it makes it difficult to write other documentation for the F27 Modular Server release (since there's nothing for tutorials and introductory posts to link to as "For more details, see...")
Fixed by https://github.com/rpm-software-management/dnf/pull/972
Would it be possible to get a "modularity" build configuration added to dnf's Read the Docs setup so there's an interim link we can point to from https://docs.pagure.org/modularity/ for F27 Beta?
No, I don't think so as it is not part of upstream's master branch.