[Dovecot] Mistake in Wiki

[Jakob Hirsch]

Quoting John Gateley:

>> Replace/rewrite the default local_delivery router:"
>> The page is immutable so can't edit it.
> If you create an account, you can edit the page.

indeed.

> I think in this context, "router" is being used in a more general sense than the
> piece of hardware, and so is okay.

No, Juha ist correct. router/transport is Exim config wording. Anyway, I
corrected it.