Added shlink to URL shorteners

README.md

@@ -1403,6 +1403,7 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 - [Polr](https://project.polr.me/) - Modern, minimalist, modular, and lightweight URL shortener. ([Source Code](https://github.com/Cydrobolt/polr)) `GPL-2.0` `PHP`
 - [reduc.io](https://github.com/ziyasal/reducio) - URL shortener service written in Scala, using Akka-Http and Redis. `MIT` `Scala`
 - [schort](https://github.com/sqozz/schort) - No login, no javascript, just short links. ([Demo](https://s.wx0.de)) `CC0-1.0` `Python`
+- [Shlink](https://shlink.io) - URL shortener with REST API and command line interface. Includes official progressive web application and docker images. ([Source code](https://GitHub.com/shlinkio/shlink)) `MIT` `PHP`
 - [shorturl](https://github.com/prologic/shorturl) - Simple URL shortener with very tiny URLs. ([Demo](https://url.mills.io)) `MIT` `Go`
 - [shuri](https://github.com/pips-/shuri) - SHort URI - Lightweight URL shortener. `MIT` `PHP`
 - [Simple-URL-Shortener](https://github.com/azlux/Simple-URL-Shortener) - KISS URL shortener, public or private (with account). Minimalist and lightweight. No dependencies. ([Demo](https://u.azlux.fr)) `MIT` `PHP`