-**Note**: For the best testing, run manual tests adding Arabic to [additional languages configuration](https://ckeditor.com/docs/ckeditor5/latest/framework/guides/contributing/development-environment.html#running-tests).
+**Note**: For the best testing, run manual tests adding Arabic to [additional languages configuration](https://ckeditor.com/docs/ckeditor5/latest/framework/guides/contributing/testing-environment.html#running-manual-tests).