Update CHANGELOG.md

Author: xrmx

CHANGELOG.md

@@ -9,10 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Running mypy on SDK resources
   ([#4053](https://github.com/open-telemetry/opentelemetry-python/pull/4053))
-
 - Added py.typed file to top-level module
   ([#4084](https://github.com/open-telemetry/opentelemetry-python/pull/4084))
-
 - Drop Final annotation from Enum in semantic conventions
   ([#4085](https://github.com/open-telemetry/opentelemetry-python/pull/4085))