Fix Kimai license

README.md

@@ -813,7 +813,7 @@ See also <https://en.wikipedia.org/wiki/List_of_streaming_media_systems>, <https
   * [GeneWeb](https://geneweb.tuxfamily.org/wiki/GeneWeb) - GeneWeb is an open source genealogy software written in OCaml. It comes with a Web interface and can be used off-line or as a Web service. ([Demo](https://demo.geneweb.tuxfamily.org/gw7/), [Source Code](https://github.com/geneweb/geneweb)) `GPLv2` `OCAML`
   * [How Secure Is My Password](https://github.com/howsecureismypassword/hsimp) - Rather than just saying a password is "weak" or "strong", How Secure is My Password? lets your users know how long it would take someone to crack their password. ([Demo](https://howsecureismypassword.net/)) `MIT` `Javascript`
   * [google-webfonts-helper](https://github.com/majodev/google-webfonts-helper) `⚠` - A Hassle-Free Way to Self-Host Google Fonts. Get eot, ttf, svg, woff and woff2 files + CSS snippets. ([Demo](https://google-webfonts-helper.herokuapp.com/)) `MIT` `Nodejs`
-  * [Kimai](http://www.kimai.org/) - Simple time and project tracking. ([Demo](http://www.kimai.org/demo/), [Source Code](https://github.com/kimai/kimai)) `GNU GPL v3` `PHP`
+  * [Kimai](http://www.kimai.org/) - Simple time and project tracking. ([Demo](http://www.kimai.org/demo/), [Source Code](https://github.com/kimai/kimai)) `GPLv3` `PHP`
   * [King Phisher](https://github.com/securestate/king-phisher) - King Phisher is a tool for testing and promoting user awareness by simulating real world phishing attacks. `BSD` `Python`
   * [LicAPI](https://projects.miguelpiedrafita.com/LicAPI) - A PHP API to manage license info. ([Source Code](https://github.com/m1guelpf/LicAPI)) `MPLv2` `PHP`
   * [Mindmaps](https://github.com/drichard/mindmaps) - An open source, offline capable, mind mapping application. ([Demo](http://drichard.org/mindmaps/)) `AGPLv3` `HTML5`