v4.2.2 changelog

Author: nfriedly

changelog.md

@@ -6,7 +6,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [v4.2.1](https://github.com/express-rate-limit/rate-limit-redis/releases/tag/v4.2.)
+## [v4.2.2](https://github.com/express-rate-limit/rate-limit-redis/releases/tag/v4.2.2)
+
+### Fixed
+
+- Fixed incorrect documentation for usage with ioredis
+
+### Added
+
+- Added documentation for usage with node-redis in cluster mode
+
+## [v4.2.1](https://github.com/express-rate-limit/rate-limit-redis/releases/tag/v4.2.1)
 
 ### Fixed