Update Alltube description

README.md

@@ -134,7 +134,7 @@ _See also [Internet of Things (IoT)](#internet-of-things-iot)_
 - [Accelerated Text](https://github.com/tokenmill/accelerated-text) - Automatically generate multiple natural language descriptions of your data varying in wording and structure. `Apache-2.0` `Java`
 - [Actionsflow](https://github.com/actionsflow/actionsflow) `⚠` - The free Zapier/IFTTT alternative for developers to automate your workflows based on Github actions. `MIT` `Docker/Nodejs`
 - [ActiveWorkflow](https://github.com/automaticmode/active_workflow) - An intelligent process and workflow automation platform based on software agents. `MIT` `Ruby`
-- [Alltube](http://www.alltubedownload.net) - Web interface for [youtube-dl](https://github.com/rg3/youtube-dl), a program to download videos and audio from [more than 100 websites](https://rg3.github.io/youtube-dl/supportedsites.html). ([Source Code](https://github.com/Rudloff/alltube)) `GPL-3.0` `PHP`
+- [Alltube](http://www.alltubedownload.net) - Web interface for [youtube-dl](https://github.com/ytdl-org/youtube-dl), a program to download videos and audio from [more than 100 websites](http://ytdl-org.github.io/youtube-dl/supportedsites.html). ([Source Code](https://github.com/Rudloff/alltube)) `GPL-3.0` `PHP`
 - [AmIUnique](https://amiunique.org/) - Learn how identifiable you are on the Internet (browser fingerprinting tool). ([Source Code](https://github.com/DIVERSIFY-project/amiunique)) `MIT` `Java`
 - [Baserow](https://baserow.io/) - Open source online database tool and Airtable alternative. Create your own database without technical experience. ([Source Code](https://gitlab.com/bramw/baserow)) `MIT` `Python/Nodejs`
 - [Beehive](https://github.com/muesli/beehive) - Flexible event and agent system, which allows you to create your own agents that perform automated tasks triggered by events and filters. `AGPL-3.0` `Go`