Update description and license for Rallly (#2972)

Co-authored-by: nodiscc <nodiscc@gmail.com>

README.md

@@ -330,7 +330,7 @@ _See also: [Comparison of CalDAV and CardDAV implementations - Wikipedia](https:
 - [Papercups](https://papercups.io/) - An open source live customer chat web app written in Elixir. ([Demo](https://app.papercups.io/demo), [Source Code](https://github.com/papercups-io/papercups)) `MIT` `Elixir`
 - [PushBits](https://github.com/pushbits/server) - Self-hosted notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify. `ISC` `Go`
 - [pWS](https://github.com/soketi/pws) - pWS is a free, open-source Pusher drop-in alternative. `MIT` `Nodejs`
-- [Rallly](https://rallly.co) - Rallly is a free collaborative scheduling service. ([Source Code](https://github.com/lukevella/Rallly)) `CC-BY-SA-4.0` `Nodejs`
+- [Rallly](https://rallly.co) - Rallly is an open-source alternative to Doodle that lets you create polls to vote on dates and times. ([Source Code](https://github.com/lukevella/Rallly)) `AGPL-3.0` `Nodejs`
 - [RetroShare](https://retroshare.cc) - Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer. ([Source Code](https://github.com/RetroShare/RetroShare)) `GPL-2.0` `C++`
 - [Revolt](https://revolt.chat/) - Revolt is a user-first chat platform built with modern web technologies. ([Source Code](https://github.com/revoltchat)) `AGPL-3.0` `Rust`
 - [Rocket.Chat](https://rocket.chat/) - Teamchat solution similar to Gitter.im or Slack. ([Source Code](https://github.com/RocketChat/Rocket.Chat)) `MIT` `Nodejs`