remove mistaken newline

Author: samuelcolvin

CHANGELOG.md

@@ -7,7 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-
 - `opentelemetry-instrumentation-celery` Allow Celery instrumentation to be installed multiple times
   ([#2342](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2342))
 - Align gRPC span status codes to OTEL specification