Apply suggestion from @jderusse

Author: jderusse

src/Service/Lambda/CHANGELOG.md

@@ -5,7 +5,7 @@
 ### Added
 
 - AWS api-change: Rework regions configuration
-- AWS api-change: This release migrated the model to Smithy keeping all features unchanged.
+- AWS api-change: remove trailling `/` in `ListFunctions` request
 
 ### Changed