Add OrgaTalk wiki to list of example sites
| [guerinpe.com](https://guerinpe.com) | https://github.com/Grelot/blog |
| [uggla.fr](https://uggla.fr) | https://github.com/uggla/blog |
| [NorthCon e.V.](https://verein.northcon.de/) | |
+| [OrgaTalk wiki](https://wiki.orgatalk.de/) | https://github.com/orgatalk/wiki |
