message-signature doc fix

* lisp/gnus/message.el (message-signature): Mention
message-signature-insert-empty-line (bug#43853).

diff --git a/lisp/gnus/message.el b/lisp/gnus/message.el
index 77856aeddec3ed5223fd405f134cca89bb244879..a906e56aac6594094bc12231874bc3492757875a 100644 (file)
--- a/lisp/gnus/message.el
+++ b/lisp/gnus/message.el
@@ -1106,7 +1106,8 @@ point and mark around the citation text as modified."
 If nil, don't insert a signature.
 If t, insert `message-signature-file'.
 If a function or form, insert its result.
-See `mail-signature' for the recommended format of a signature."
+See `mail-signature' for the recommended format of a signature.
+Also see `message-signature-insert-empty-line'."
   :version "23.2"
   :type '(choice string
                  (const :tag "None" nil)