Update CHANGELOG.md

Co-authored-by: Riccardo Magliocchetti <[email protected]>

Author: rads-1996

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-- `opentelemetry-api`: Convert objects of any type other than AnyValue which fixes invalid type at WSGI request attributes
+- `opentelemetry-api`: Convert objects of any type other than AnyValue in attributes to string to be exportable
   ([#4808](https://github.com/open-telemetry/opentelemetry-python/pull/4808))
 - docs: Added sqlcommenter example
   ([#4734](https://github.com/open-telemetry/opentelemetry-python/pull/4734))