It's a list of contributors, not contributions.
|@@ -25,7 +25,7 @@ Install the extension using tools/macruby-docs-dev.user.js to use the local deve|
|## Credits and license|
|-- Safari support (Safari Extension) was added by [seanlilmateus](https://github.com/seanlilmateus).|
|+- [seanlilmateus](https://github.com/seanlilmateus) added Safari support (Safari Extension).|
|By [Joakim Kolsjö](https://github.com/joakimk) under the MIT license:|