combine changelog entries

Author: Patrick Housley

CHANGELOG.md

@@ -20,9 +20,7 @@ release.
 
 - Add definition for standard output log record exporter.
   ([#3741](https://github.com/open-telemetry/opentelemetry-specification/pull/3741))
-- BREAKING: Remove `event.domain` from log event attributes.
-  ([#3749](https://github.com/open-telemetry/opentelemetry-specification/pull/3749))
-- BREAKING: Change `event.name` definition to include `namespace`.
+- BREAKING: Change `event.name` definition to include `namespace` and removed `event.domain` from log event attributes.
   ([#3749](https://github.com/open-telemetry/opentelemetry-specification/pull/3749))
 
 ### Resource