Fix link in README.md

Author: sambokai

README.md

@@ -11,5 +11,5 @@ Please keep the main list sorted alphabetically AND remove duplicates. [Sort & d
 * Sort by popularity - A separate list, sorted by popularity. (i.e. goo.gl, bit.ly, ow.ly)
 
 ### License
-"THE BEER-WARE LICENSE" (Revision 42) ([Wikipedia](https://de.wikipedia.org/wiki/Beerware)):   
+"THE BEER-WARE LICENSE" (Revision 42) ([Wikipedia](https://en.wikipedia.org/wiki/Beerware)):   
 Sam Bokai wrote this file. As long as you retain this notice **you can do whatever you want with this stuff**. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return. 2016 Sam Bokai