move changelog to unreleased section

CHANGELOG.md

@@ -13,6 +13,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Fixed python generation in scenarios with opening/closing tags for code comments. [#5636](https://github.com/microsoft/kiota/issues/5636)
+
 ## [1.20.0] - 2024-11-07
 
 ### Added
@@ -30,7 +32,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixes typing inconsistencies in generated code and libraries in Python [kiota-python#333](https://github.com/microsoft/kiota-python/issues/333)
 - Fixes generation of superfluous fields for Models with discriminator due to refiners adding the same properties to the same model [#4178](https://github.com/microsoft/kiota/issues/4178).
 - Fixes unsigned shim binary when installed as dotnet tool [#5650](https://github.com/microsoft/kiota/issues/5650).
-- Fixed python generation in scenarios with opening/closing tags for code comments. [#5636](https://github.com/microsoft/kiota/issues/5636)
 
 ## [1.19.1] - 2024-10-11