remove trailing space from changelog

Author: rodgerbrennan

CHANGELOG.md

@@ -19,7 +19,7 @@ For experimental package changes, see the [experimental CHANGELOG](experimental/
 
 ### :house: (Internal)
 
-* chore(opentelemetry-context-zone-peer-dep): support zone.js ^v0.13.0 [#4320](https://github.com/open-telemetry/opentelemetry-js/pull/4320) 
+* chore(opentelemetry-context-zone-peer-dep): support zone.js ^v0.13.0 [#4320](https://github.com/open-telemetry/opentelemetry-js/pull/4320)
 
 ## 1.20.0