Update the "Archive copies" documentation
https://docs.softwareheritage.org/devel/swh-storage/archive-copies.html
It references swh-archiver, which is no longer what we use to keep the copies in sync.
Migrated from T1736 (view on Phabricator)
https://docs.softwareheritage.org/devel/swh-storage/archive-copies.html
It references swh-archiver, which is no longer what we use to keep the copies in sync.
Migrated from T1736 (view on Phabricator)