Fix typo

Author: oschwald

CHANGELOG.md

@@ -15,7 +15,7 @@ CHANGELOG
 * IMPORTANT: PHP 8.1 or greater is now required.
 * BREAKING: Read-only properties are now used for the model and record
   classes rather than magic methods. This significantly improves performance.
-* BREAKING: The `raw` property on model classess and the `record` property on
+* BREAKING: The `raw` property on model classes and the `record` property on
   record classes have been removed.
 * BREAKING: On `GeoIp2\Record\Traits`, the deprecated `isAnonymousProxy` and
   `isSatelliteProvider` properties have been removed.