Update CHANGELOG.md

Author: sunli829

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - add market temperature api
 - add support use environment variable `LONGPORT_LANGUAGE` to set the response language
 - java: add `QuoteContext.getCapitalDistribution` method
+- fix [#208](https://github.com/longportapp/openapi/issues/208)
 
 # [2.1.8] 2025-01-27