Merge pull request thibmaek#220 from koenvervloesem/ubuntu_versions

Update Ubuntu distributions

Author: thibmaek

README.md

@@ -88,10 +88,11 @@ The complete collection of (consumer) Raspberry Pi models consist of:
 - [RuneAudio](http://www.runeaudio.com/) - Free and open source OS that turns embedded hardware into Hi-Fi music players.
 - [SamplerBox](http://www.samplerbox.org/makeitsoftware) - Drop'n'play sampler: drop .WAV samples on the SD card, and play!
 - [SARPi](http://sarpi.fatdog.nl/index.php?p=sarpi) - Stands for the Slackware ARM on Raspberry Pi.
-- [Snappy Ubuntu Core](https://developer.ubuntu.com/core/get-started/raspberry-pi-2-3) - Official (minimal) Ubuntu distribution for IoT. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png)
 - [Twister OS](https://twisteros.com/) - Skinned version of Raspberry Pi OS with preinstalled apps like box86 and Retropie to introduce noobs to Linux and Raspberry Pi. ![Supports Raspberry Pi 3](/media/badges/rpi-3.png)
+- [Ubuntu Core](https://ubuntu.com/download/raspberry-pi-core) - Official (minimal) Ubuntu distribution for IoT. Supports Raspberry Pi Zero 2 W. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png)
+- [Ubuntu Desktop](https://ubuntu.com/raspberry-pi/desktop) - Ubuntu Desktop distribution for the Raspberry Pi. Supports Raspberry Pi 4.
 - [Ubuntu MATE](https://ubuntu-mate.org/raspberry-pi/) - Ubuntu distribution for the Raspberry Pi based on MATE desktop. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png)
-- [Ubuntu Server](https://www.ubuntu.com/download/iot/raspberry-pi-2-3) - Ubuntu Server distribution for the Raspberry Pi. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png) ![Supports Raspberry Pi 3](/media/badges/rpi-3.png)
+- [Ubuntu Server](https://ubuntu.com/raspberry-pi/server) - Ubuntu Server distribution for the Raspberry Pi. Supports Raspberry Pi Zero 2 W. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png)
 - [Volumio](https://volumio.org/) - Headless audiophile music player, designed to play music with the highest possible fidelity.
 - [Windows 10 ARM](https://worproject.ml/) - Community maintained Windows 10 on Raspberry Pi. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png) ![Supports Raspberry Pi 3](/media/badges/rpi-3.png)
 - [Windows 10 IoT Core](https://docs.microsoft.com/nl-nl/windows/iot-core/downloads) - Windows 10 distribution for IoT. ![Supports Raspberry Pi 2+](/media/badges/rpi-2+.png)