[PATCH] emacs: document notmuch-fcc-dirs

[David Bremner]

Mark Walters <markwalters1009 at gmail.com> writes:

> This updates the docstring for the variable notmuch-fcc-dirs to match
> the new insert code.
> ---
>
> Jani pointed out on irc that I had forgotten to update this
> docstring. As using notmuch insert for fcc is now the default this is
> particularly important.

Right, it also needs a NEWS item

d