Change https to http for wger.

The site wger.de does not seem to have a valid SSL certificate, so the previous link was broken.

README.md

@@ -1162,7 +1162,7 @@ See also _[Monitoring](#monitoring)_
 - [Organizr](https://github.com/causefx/Organizr) - Organizr aims to be your one stop shop for your Servers Frontend. `GPL-3.0` `PHP`
 - [simple-dash](https://github.com/kutyla-philipp/simple-dash) - A simple, fully responsive Dashboard to forward to the services of your choice. ([Demo](https://kutyla-philipp.github.io/simple-dash/)) `MIT` `Javascript`
 - [Tipboard](http://allegro.tech/tipboard/) - In-house, tasty, local dashboarding system. ([Source Code](https://github.com/allegro/tipboard)) `Apache-2.0` `Python`
-- [wger](https://wger.de/) - Web-based personal workout, fitness and weight logger/tracker. It can also be used as a simple gym management utility and offers a full REST API as well. ([Demo](https://wger.de), [Source Code](https://github.com/rolandgeider/wger)) `AGPL-3.0` `Python`
+- [wger](http://wger.de/) - Web-based personal workout, fitness and weight logger/tracker. It can also be used as a simple gym management utility and offers a full REST API as well. ([Demo](http://wger.de), [Source Code](https://github.com/rolandgeider/wger)) `AGPL-3.0` `Python`
 
 ## Photo and Video Galleries