Fix title

fabaff · Byron · commit 146202cdcbed · 2021-09-10T14:18:21.000+08:00
diff --git a/doc/source/changes.rst b/doc/source/changes.rst
@@ -2,7 +2,7 @@
 Changelog
 =========
 
-31.23
+3.1.23
 ======
 
 * This is the second typed release with a lot of improvements under the hood.
