Point to correct repo URL.
Point to correct repo URL.

Since the [npm page](https://www.npmjs.com/package/react-blessed/) has a broken link otherwise.
Yomguithereal/react-blessed,nicolascine/react-blessed,davidmarkclements/react-blessed,mizchi/react-blessed,kjirou/react-blessed,bzero/react-blessed,ajacksified/react-blessed,mcanthony/react-blessed,esnunes/react-blessed,chentsulin/react-blessed