Fix typo in Gnus regexp

* lisp/gnus/gnus-art.el (gnus-button-valid-fqdn-regexp): Fix
typo in last change to this regexp (bug#22592).

diff --git a/lisp/gnus/gnus-art.el b/lisp/gnus/gnus-art.el
index e9c2921a413f6eaa959fd604c8e36656e76300f2..f36fdd29d6218323b19f8d0db3ecde71ea07f102 100644 (file)
--- a/lisp/gnus/gnus-art.el
+++ b/lisp/gnus/gnus-art.el
@@ -7452,7 +7452,7 @@ groups."
   :group 'gnus-article-buttons
   :type 'regexp)
 
-(defcustom gnus-button-valid-fqdn-regexp "\\([-A-Za-z0-9]+\\.\\a)+[A-Za-z]+"
+(defcustom gnus-button-valid-fqdn-regexp "\\([-A-Za-z0-9]+\\.\\)+[A-Za-z]+"
   "Regular expression that matches a valid FQDN."
   :version "25.2"
   :group 'gnus-article-buttons