Finding all TLD typos using Ruby and ronin-support

You may have recently read a news story about how a typo in a US military email address (<mailbox>@<domain>.mil -> <mailbox>@<domain>.ml) accidentally caused sensitive military secrets to be sent to a similar Mali email address for years.

What if I told you, you could use Ronin to find all of the one-character-missing valid typos for all of the TLDs?