Fix formatting in CHANGELOG.md for CI workflow separation clarification

Author: neotrow

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
-- Split up `CI` workflow into two separate workflows for the comment posting to work for PRs from forks
+- Split up `CI` workflow into two separate workflows for the comment posting to work for PRs from forks.
 
 ## [1.2.1] - 2025-03-18