Update changelog for Dataset Slug feature addition

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Introduced text ellipsis functionality to handle long dataset description texts and distribution descriptions.
 - Enhanced dataset pages by displaying comprehensive contact information, including author, maintainer, creator, and contact person.
+- Added dataset slug field in the dataset form.
 
 ## [2.3.1]