Default a typo fix to true if it is the only fix
Default a typo fix to true if it is the only fix

If there is only one suggestion, default the typo fix to true to make
accepting it easier.

chrisdone/intero,chrisdone/ghci-ng,commercialhaskell/intero,chrisdone/intero,chrisdone/intero,commercialhaskell/intero,commercialhaskell/intero,chrisdone/ghci-ng