Fix typo in `(emacs) Lisp Doc'

* doc/emacs/programs.texi (Lisp Doc): Fix reference to
'eldoc-echo-area-display-truncation-message'.  (Bug#58324)

diff --git a/doc/emacs/programs.texi b/doc/emacs/programs.texi
index c746a374b32c67ba67c3a8fdd09f8e5424c67d12..9eb11c602de920784eb218b271bbfdb4a14fb5f8 100644 (file)
--- a/doc/emacs/programs.texi
+++ b/doc/emacs/programs.texi
@@ -1316,8 +1316,8 @@ This abnormal hook holds documentation functions.  It acts as a
 collection of backends for ElDoc.  This is what modes should use to
 register their documentation functions with ElDoc.
 
-@vindex eldoc-display-truncation-message
-@item eldoc-display-truncation-message
+@vindex eldoc-echo-area-display-truncation-message
+@item eldoc-echo-area-display-truncation-message
 If non-@code{nil} (the default), display a verbose message about how
 to view a complete documentation (if it has been truncated in the echo
 area).  If @code{nil}, just mark truncated messages with @samp{...}.