Address review comment: update CHANGELOG to mention enabled view parameter

Author: dashpole

CHANGELOG.md

@@ -16,7 +16,7 @@ release.
 - Clarify `maxExportBatchSize` behavior, timeouts, and error handling for
   Periodic exporting MetricReader.
   ([#5265](https://github.com/open-telemetry/opentelemetry-specification/pull/5265))
-- Add the OptIn advisory parameter.
+- Add the OptIn advisory parameter and enabled View stream parameter.
   ([#4809](https://github.com/open-telemetry/opentelemetry-specification/pull/4809))
 
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