updated readme to new urls

README.md

-This is a small and easy URL shorter, written in Python. To install please visit the [wiki](https://git.jonasled.de/jonasled/url_shorter_docker/wiki). A Demo you can find under [kurz.gq](https://kurz.gq)
+This is a small and easy URL shorter, written in Python. To install please visit the [wiki](https://gitlab.jonasled.de/jonasled/url_shorter_docker/wikis). A Demo you can find under [kurz.gq](https://kurz.gq)
 
-![screenshot of url shorter](https://git.jonasled.de/jonasled/url_shorter_docker/raw/commit/f38811d5dc5ae7dec0bdc75c90ee88bdee426e70/Screenshot.png)
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+![screenshot of url shorter](https://gitlab.jonasled.de/jonasled/url_shorter_docker/raw/commit/f38811d5dc5ae7dec0bdc75c90ee88bdee426e70/Screenshot.png)
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