Tidy backup limitation not documented

[DaAwesomeP]

Hello,

When using the backup param for tidy, the docs say that the backup param is passed to file:
https://github.com/OpenVoxProject/puppet/blob/965de49fadc0e9cfc51c50bfa85bde775b6aa5e3/references/types/tidy.md?plain=1#L69-L75

https://github.com/OpenVoxProject/puppet/blob/965de49fadc0e9cfc51c50bfa85bde775b6aa5e3/lib/puppet/type/tidy.rb#L119-L123

However, this is not entirely the case. Tidy only allows backing up to a file bucket:
https://github.com/OpenVoxProject/puppet/blob/965de49fadc0e9cfc51c50bfa85bde775b6aa5e3/lib/puppet/type/tidy.rb#L240-L245

This should be added to the documentation, but even better (separate issue) would be remove this restriction. It would be awesome to be able to use tidy to rename atomic config files to disable them.