The internet-draft is hosted at draft-sipos-dtn-bpv7-admin-iana.
A local build of the current main branch is available draft-ietf-dtn-bpv7-admin-iana.html with its misspelling.txt.
Prerequisites to building can be installed on Ubuntu with:
sudo apt-get install -y cmake xml2rfc xmlstarlet aspell python3
and then the document can be built with
cmake -S . -B build
cmake --build build