Eli Zaretskii <eliz@gnu.org> writes:

From: Elijah Gabe Pérez <eg642616@gmail.com>
Cc: 77124@debbugs.gnu.org
Date: Thu, 20 Mar 2025 12:37:23 -0600

— a/etc/NEWS
+ b/etc/NEWS
@@ -1900,6 +1900,17 @@ another pattern matching syntax that is different from that of 'pcase',
which some users might find less cryptic.
See the Info node "(elisp) cond* Macro" for details.

+—
+** New eldoc function 'elisp-eldoc-funcall-with-docstring'.
+This function includes the current function docstring in eldoc echo area
+and can be used as a more detailed alternative to 'elisp-eldoc-funcall'.
+
+** New user option 'elisp-eldoc-funcall-with-docstring-lenght'.
+This user option specifies how long function docstring must be displayed
+in 'elisp-eldoc-funcall-with-docstring'. If set to 'short' only display
+cut docstring before period. Otherwise if set to 'full', display full
+docstring.'

These two entries should be moved to a separate section "ElDoc" under
"Changes in Specialized Modes and Packages in Emacs 31.1".

Also, please mark the second entry with "—", and fix a typo there
("length").

+(defcustom elisp-eldoc-funcall-with-docstring-lenght 'short
+ "Specify function docstring lenght in `elisp-eldoc-funcall-with-docstring'.

"Control length of doc string shown by `elisp-eldoc-funcall-with-docstring'."

(Note the typo: "length".)

+If set to `short' only display docstring before period.,

^
A comma is missing there. Also, there's a redundant comma at the end.
And I would rephrase:

If set to `short', only show the first sentence of the doc string.

Done.