fix changelog

Author: burrbull

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - [breaking-change] `Defaults` field renamed on `RegisterProperties`
   and added into `Peripheral` and `ClusterInfo`
-- Added `derived_from` into `field` and `ClusterInfo`
+- Added `derived_from` into `Field` and `ClusterInfo`
 - Updated dependencies, use `Edition 2018`
 - Added missing `zeroToToggle`
 - Added serializing/deserializing with `serde`