Update CHANGELOG with recent fixes and improvements

- Update CHANGELOG.md
- Updated the Pull Request URL

Author: GitanshKapoor

CHANGELOG.md

@@ -37,7 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - `opentelemetry-instrumentation-pika`: Fix `messaging.destination` span attribute set to `task_name` instead of `destination` in `_get_span`
-  ([#1026](https://github.com/open-telemetry/opentelemetry-python-contrib/issues/1026))
+  ([#4563](https://github.com/open-telemetry/opentelemetry-python-contrib/issues/4563))
 - `opentelemetry-instrumentation-pika` Use `ObjectProxy` instead of `BaseObjectProxy` for `ReadyMessagesDequeProxy` to restore iterability with wrapt 2.x
   ([#4461](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4461))
 - `opentelemetry-instrumentation-dbapi` Use `ObjectProxy` instead of `BaseObjectProxy` for `TracedCursorProxy` to restore iterability with wrapt 2.x