Fix punctuation

Author: politician

README.md

@@ -144,7 +144,7 @@ Set up your GitHub Actions workflow with a specific version of your programming
 - [Check GitHub Status in your Workflow](https://github.com/crazy-max/ghaction-github-status)
 - [Manage Labels on GitHub (create/rename/update/delete) as Code](https://github.com/crazy-max/ghaction-github-labeler)
 - [Herald Rules for GitHub: Add Subscribers, Assignees, Labels, and More to Your PR](https://github.com/gagoar/use-herald-action)
-- [Copybara Action](https://github.com/olivr/copybara-action) - Move and transform code between repositories (ideal to maintain several repos from one monorepo)
+- [Copybara Action](https://github.com/olivr/copybara-action) - Move and transform code between repositories (ideal to maintain several repos from one monorepo).
 
 ### Collection of Actions