fix: add readme Changelog

Author: DEMAxx

README.md

@@ -71,6 +71,7 @@ You can check out the plugin documentation at [site](https://cdek-it.github.io/w
 * WP-97 Cdek delivery logger
 * WP-148 Fixed 500 error when no available shipments detected
 * WP-150 React version downgraded to save compatibility with WP React components
+* WP-153 Fix error settings city migration
 
 = 4.0 =
 * WP-40 Replaced the map in the plugin settings with address input fields