Fix typo: persistent -> persist
Fix typo: persistent -> persist

According to [here](https://github.com/commercialhaskell/stack/blob/47759559222cc501b5e2bbd0080963cc3229f489/src/Stack/Types/Docker.hs#L119) and [here](https://github.com/commercialhaskell/stack/blob/47759559222cc501b5e2bbd0080963cc3229f489/src/Stack/Types/Docker.hs#L241)
sjakobi/stack,anton-dessiatov/stack,martin-kolinek/stack,juhp/stack,MichielDerhaeg/stack,AndreasPK/stack,anton-dessiatov/stack,Heather/stack,AndrewRademacher/stack,mrkkrp/stack,mrkkrp/stack,MichielDerhaeg/stack,Fuuzetsu/stack,AndreasPK/stack,Blaisorblade/stack,juhp/stack,Blaisorblade/stack,deech/stack,martin-kolinek/stack,Fuuzetsu/stack,sjakobi/stack,Heather/stack,deech/stack,AndrewRademacher/stack