Update CHANGES.md

fix typo in version [v3.11.0] - 2023-08-19

Author: emicklei

CHANGES.md

@@ -18,7 +18,7 @@
 
 - fix by restoring custom JSON handler functions (Mike Beaumont #540)
 
-## [v3.12.0] - 2023-08-19
+## [v3.11.0] - 2023-08-19
 
 - restored behavior as <= v3.9.0 with option to change path strategy using TrimRightSlashEnabled.