Changed changelog

Author: lorenzoronzani

CHANGELOG.md

@@ -12,9 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-- `opentelemetry-exporter-otlp-proto-http`: refactor shared HTTP exporter logic into common module, extract `_setup_session`, `_export`,
-  `_export_with_retries`, and `_compression_from_env` from trace/log/metric exporters into `_common`
-    ([#2990](https://github.com/open-telemetry/opentelemetry-python/pull/5160))
+- `opentelemetry-exporter-otlp-proto-http`: refactor shared HTTP exporter logic into `_common` module, introduce `OTLPHttpClient` base class and `_SignalConfig` dataclass, eliminating duplicated `__init__`, `_export`, retry loop, and `shutdown` across the trace, log, and metric exporters.
+  ([#2990](https://github.com/open-telemetry/opentelemetry-python/pull/5160))
 - Apply fixes for `UP` ruff rule
   ([#5133](https://github.com/open-telemetry/opentelemetry-python/pull/5133))
 - Switch to SPDX license headers and add CI enforcement