Update CHANGELOG.md

removed unnecessary white space change

Author: eddawley

CHANGELOG.md

@@ -32,7 +32,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#3610](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3610))
 - `opentelemetry-instrumentation-system-metrics`: Add `cpython.gc.collections` metrics with collection unit is specified in semconv ([3617](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3617))
 
-
 ## Version 1.35.0/0.56b0 (2025-07-11)
 
 ### Added