Update CHANGELOG

Author: parroty

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 #### Changes
 - Update oauther for OTP 24 environment (#149).
-- Documentation refinements (#139).
+- Refine documents (#139).
 
 ## v0.12.5 - 2021-11-11