fix(otlp-exporter-base): fix changelog for merged retry pr (#3650)

experimental/CHANGELOG.md

@@ -13,6 +13,7 @@ All notable changes to experimental packages in this project will be documented
 * feat: use HTTP_ROUTE in span name [#3603](https://github.com/open-telemetry/opentelemetry-js/pull/3603) @Flarna
 * feat: add HTTP_ROUTE attribute to http incoming metrics if present [#3581](https://github.com/open-telemetry/opentelemetry-js/pull/3581) @hermogenes
 * feat(sdk-node): install diag logger with OTEL_LOG_LEVEL [#3627](https://github.com/open-telemetry/opentelemetry-js/pull/3627) @legendecas
+* feat(otlp-exporter-base): add retries [#3207](https://github.com/open-telemetry/opentelemetry-js/pull/3207) @svetlanabrennan
 * feat(sdk-node): override IdGenerator when using NodeSDK [#3645](https://github.com/open-telemetry/opentelemetry-js/pull/3645) @haddasbronfman
 
 ### :bug: (Bug Fix)
@@ -76,7 +77,6 @@ All notable changes to experimental packages in this project will be documented
 * deps: remove unused proto-loader dependencies and update grpc-js and proto-loader versions [#3337](https://github.com/open-telemetry/opentelemetry-js/pull/3337) @seemk
 * feat(metrics-exporters): configure temporality via environment variable [#3305](https://github.com/open-telemetry/opentelemetry-js/pull/3305) @pichlermarc
 * feat(console-metric-exporter): add temporality configuration [#3387](https://github.com/open-telemetry/opentelemetry-js/pull/3387) @pichlermarc
-* feat(otlp-exporter-base): add retries [#3207](https://github.com/open-telemetry/opentelemetry-js/pull/3207) @svetlanabrennan
 
 ### :bug: (Bug Fix)