[PATCH 11/18] cli/new, insert, reindex: update documentation for --try-decrypt=auto

[David Bremner]

>  
> -    ``--try-decrypt=(true|false)``
> +    ``--try-decrypt=(true|auto|false)``

I sympathize with Jamie's point about consistency here. I'm
not sure if this was already mentioned, but the inconsistency between
boolean and keyword arguments is a bit confusing also.