emacs-27 f6d6ccc: Clarify message-sendmail-extra-arguments docstring

[Stefan Kangas]

branch: emacs-27
commit f6d6ccc984ac241e1a5f61d770bf77c15f30ad07
Author: Stefan Kangas <address@hidden>
Commit: Stefan Kangas <address@hidden>

    Clarify message-sendmail-extra-arguments docstring
    
    * lisp/gnus/message.el (message-sendmail-extra-arguments): Clarify
    docstring.
---
 lisp/gnus/message.el | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lisp/gnus/message.el b/lisp/gnus/message.el
index adefa0e..5d9473f 100644
--- a/lisp/gnus/message.el
+++ b/lisp/gnus/message.el
@@ -873,8 +873,8 @@ If this is nil, use `user-mail-address'.  If it is the 
symbol
     message-sendmail-envelope-from))
 
 (defcustom message-sendmail-extra-arguments nil
-  "Additional arguments to `sendmail-program'."
-  ;; E.g. '("-a" "account") for msmtp
+  "Additional arguments to `sendmail-program'.
+A list of strings, e.g. '("-a" "account") for msmtp."
   :version "23.1" ;; No Gnus
   :type '(repeat string)
   ;; :link '(custom-manual "(message)Mail Variables")