Signed-off-by: Georg <georg@lysergic.dev> (#2591)

Renaming Oragono to Ergo

... and replacing the links respectively.

README.md

@@ -388,7 +388,7 @@ _[IRC](https://en.wikipedia.org/wiki/Internet_Relay_Chat) communication software
 - [Dispatch](https://github.com/khlieng/dispatch) - Self-hosted web IRC client written in Go. ([Demo](https://dispatch.khlieng.com/connect)) `MIT` `Go`
 - [Kiwi IRC](https://kiwiirc.com/) - Responsive web IRC client with theming support. ([Demo](https://kiwiirc.com/nextclient/), [Source Code](https://github.com/kiwiirc/kiwiirc)) `Apache-2.0` `Nodejs`
 - [ngircd](https://ngircd.barton.de/) - Free, portable and lightweight Internet Relay Chat server for small or private networks. ([Source Code](https://github.com/ngircd/ngircd)) `GPL-2.0` `C`
-- [Oragono](https://oragono.io) - Modern IRCv3 server written in Go, combining the features of an ircd, a services framework, and a bouncer. ([Source Code](https://github.com/oragono/oragono/)) `MIT` `Go`
+- [Ergo](https://ergo.chat/) - Modern IRCv3 server written in Go, combining the features of an ircd, a services framework, and a bouncer. ([Source Code](https://github.com/ergochat/ergo)) `MIT` `Go`
 - [The Lounge](https://thelounge.github.io/) - Self-hosted web IRC client. ([Demo](https://demo.thelounge.chat/), [Source Code](https://github.com/thelounge/lounge)) `MIT` `Nodejs`
 - [Quassel IRC](http://quassel-irc.org/) - distributed IRC client, meaning that one (or multiple) client(s) can attach to and detach from a central core. ([Source Code](https://github.com/quassel/quassel)) `GPL-2.0` `C++`
 - [Robust IRC](https://robustirc.net/) - RobustIRC is IRC without netsplits. Distributed IRC server, based on RobustSession protocol. ([Source Code](https://github.com/robustirc/robustirc)) `BSD-3-Clause` `Go`