examples: Add kerkour.fr in EXAMPLES.md
| [maxdeviant.com](https://maxdeviant.com/) | |
| [Uwes Blog](https://uwe-arzt.de) | https://github.com/uwearzt/site-uwe-arzt |
| [ozkriff.games](https://ozkriff.games) | https://github.com/ozkriff/ozkriff.github.io-src |
+| [Sylvain Kerkour](https://kerkour.fr) | https://gitlab.com/z0mbie42/kerkour.fr |
