Fix CHANGES.txt

Author: amotl

CHANGES.txt

@@ -8,6 +8,9 @@ Unreleased
 - SQLAlchemy DDL: Allow turning off column store using ``crate_columnstore=False``.
   Thanks, @fetzerms.
 
+- SQLAlchemy DDL: Allow setting ``server_default`` on columns to enable
+  server-generated defaults. Thanks, @JanLikar.
+
 
 2023/04/18 0.31.1
 =================
@@ -16,7 +19,6 @@ Unreleased
   SQLAlchemy 2.0 by adding the new ``insert_returning`` and ``update_returning`` flags
   in the CrateDB dialect.
 
-- SQLAlchemy DDL: Allow setting ``server_default`` on columns to enable server-generated defaults.
 
 2023/03/30 0.31.0
 =================