update CHANGELOG for open-telemetry#4978

Author: Manvi2402

CHANGELOG.md

@@ -22,7 +22,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4935](https://github.com/open-telemetry/opentelemetry-python/pull/4935))
 - `opentelemetry-sdk`: upgrade vendored OTel configuration schema from v1.0.0-rc.3 to v1.0.0
   ([#4965](https://github.com/open-telemetry/opentelemetry-python/pull/4965))
-
+- improve check-links ci job
+  ([#4978](https://github.com/open-telemetry/opentelemetry-python/pull/4978))
 ## Version 1.40.0/0.61b0 (2026-03-04)
 
 - `opentelemetry-sdk`: deprecate `LoggingHandler` in favor of `opentelemetry-instrumentation-logging`, see `opentelemetry-instrumentation-logging` documentation