[PATCH] emacs: Correct the documentation for `notmuch-search-line-faces'.

[David Bremner]

David Edmondson <dme at dme.org> writes:

> The implementation and documentation for `notmuch-search-line-faces'
> disagreed in how elements in the list were merged. Correct the
> documentation to match the implementation (that is, the earlier
> elements in the list have precedence over later elements).

pushed to master.

d