update link to jnigen

Author: Kright

README.md

@@ -4,7 +4,7 @@
 
 *This is a fork of and based on the [original work by William Hartman](https://github.com/williamahartman/Jamepad/tree/ae170a95eb7c14d82b19328480b1ab5a45b77001)*.
 
-Jamepad is a library for using gamepads in Java. It's based on SDL2 ([here](https://www.libsdl.org/)) and uses jnigen ([more info here](https://github.com/libgdx/libgdx/wiki/jnigen)). We also use [this](https://github.com/gabomdq/SDL_GameControllerDB) really nice database of gamepad mappings.
+Jamepad is a library for using gamepads in Java. It's based on SDL2 ([here](https://www.libsdl.org/)) and uses jnigen ([more info here](https://libgdx.com/wiki/utils/jnigen)). We also use [this](https://github.com/gabomdq/SDL_GameControllerDB) really nice database of gamepad mappings.
 
 Jamepad has:
   - One library that supports all platforms (Windows, OSX, and Linux)