EntryType::Continuous / Contiguous typo

[allisonkarlitskaya]

According to https://docs.rs/tar/latest/tar/enum.EntryType.html there is a type of entry called "Continuous". Every other reference for the tar archive format that I've been able to find (Wikipedia, GNU docs, various blogs, etc.) call this "Contiguous".

Is that intentional? If so, a note should probably be added to the docs about it.