contrib/lisp/: Fix some headers

* contrib/lisp/ox-rss.el:
* contrib/lisp/org-registry.el:
* contrib/lisp/org-expiry.el:
* contrib/lisp/ol-elisp-symbol.el: Fix header.

contrib/lisp/ol-elisp-symbol.el

@@ -2,7 +2,7 @@
 ;;
 ;; Copyright 2007-2020 Free Software Foundation, Inc.
 ;;
-;; Author: Bastien Guerry
+;; Author: Bastien Guerry <bzg@gnu.org>
 ;; Version: 0.2
 ;; Keywords: org, remember, lisp
 ;; URL: http://www.cognition.ens.fr/~guerry/u/org-elisp-symbol.el

contrib/lisp/org-expiry.el

@@ -2,7 +2,7 @@
 ;;
 ;; Copyright 2007-2020 Free Software Foundation, Inc.
 ;;
-;; Author: Bastien Guerry
+;; Author: Bastien Guerry <bzg@gnu.org>
 ;; Version: 0.2
 ;; Keywords: org expiry
 

contrib/lisp/org-registry.el

@@ -1,6 +1,6 @@
 ;;; org-registry.el --- a registry for Org links
 ;;
-;; Copyright 2007-2014 Bastien Guerry
+;; Copyright 2007-2020 Free Software Foundation, Inc.
 ;;
 ;; Emacs Lisp Archive Entry
 ;; Filename: org-registry.el

contrib/lisp/ox-rss.el

@@ -1,6 +1,6 @@
 ;;; ox-rss.el --- RSS 2.0 Back-End for Org Export Engine
 
-;; Copyright (C) 2013-2015  Bastien Guerry
+;; Copyright (C) 2013-2020 Free Software Foundation, Inc.
 
 ;; Author: Bastien Guerry <bzg@gnu.org>
 ;; Keywords: org, wp, blog, feed, rss