Backport commit bef1be873 from Emacs

Fixes for "Maintainer:" and related lines
bef1be873009d6e9f5a097396179f63a565bb6fd
Paul Eggert
Sun May 19 21:34:27 2019 -0700

lisp/ox-publish.el

@@ -2,7 +2,7 @@
 ;; Copyright (C) 2006-2019 Free Software Foundation, Inc.
 
 ;; Author: David O'Toole <dto@gnu.org>
-;; Maintainer: Carsten Dominik <carsten DOT dominik AT gmail DOT com>
+;; Maintainer: Carsten Dominik <carsten at orgmode dot org>
 ;; Keywords: hypermedia, outlines, wp
 
 ;; This file is part of GNU Emacs.