Apply suggestion from @mmattel

Author: mmattel

README.md

@@ -2,7 +2,7 @@
 
 **IMPORTANT**
 
-Scince April 2026, this repository requires [Commit Signing](https://docs.github.com/articles/about-gpg) and uses [Conventional Commits](https://www.conventionalcommits.org) for commits and the Pull Request title.
+Since April 2026, this repository requires [Commit Signing](https://docs.github.com/articles/about-gpg) and uses [Conventional Commits](https://www.conventionalcommits.org) for commits and the Pull Request title.
 
 **Table of Contents**