Add PR on the changelog

Author: Kludex

CHANGELOG.md

@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - `opentelemetry-instrumentation-starlette`: Retrieve `meter_provider` key instead of `_meter_provider` on `_instrument`
+  ([#3048](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3048))
 - `opentelemetry-instrumentation-httpx`: instrument_client is a static method again
   ([#3003](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3003))
 - `opentelemetry-instrumentation-system_metrics`: fix callbacks reading wrong config