Fix minor typo in CHANGELOG

Author: lafrech

CHANGELOG.rst

@@ -12,7 +12,7 @@ Bug fixes:
   Thanks :user:`nosnickid` for the report and :user:`worksbyfriday` for the PR.
 - Fix `marshmallow.validate.OneOf` emitting extra pairs when labels outnumber choices (:issue:`2869`).
   Thanks: user:`T90REAL` for the report and :user:`rstar327` for the PR.
-- Fix behavior when passing a dot-delited attribute name to ``partial`` for a key with ``data_key`` set (:pr:`2903`).
+- Fix behavior when passing a dot-delimited attribute name to ``partial`` for a key with ``data_key`` set (:pr:`2903`).
   Thanks :user:`bysiber` for the PR.
 - Fix Enum field by-name lookup to only return actual members (:pr:`2902`).
   Thanks :user:`bysiber` for the PR.