Update library.properties

Author: luisllamasbinaburo

library.properties

@@ -5,5 +5,5 @@ maintainer=Luis Llamas
 sentence=ReactiveArduino implements observable-observer pattern on a processor like Arduino
 paragraph=ReactiveArduino implements observable-observer pattern on a processor like Arduino
 category=Other
-url=https://www.luisllamas.es
+url=https://github.com/luisllamasbinaburo/Arduino-ReactiveArduino
 architectures=*