Oxford comma

Author: maartenba

README.md

@@ -7,7 +7,7 @@ You will need Node 22+ installed on your operating system and in the PATH.
 * Run `npm install` to restore all dependencies.
 * Use `npm run dev` to run the documentation site locally.
 
-Alternatively in VS Code, GitHub Codespaces or WebStorm, you can use the devcontainer to get a development environment set up.
+Alternatively in VS Code, GitHub Codespaces, or WebStorm, you can use the devcontainer to get a development environment set up.
 
 ## Project Structure