Fixed typo

Author: personsg

README.md

@@ -23,7 +23,7 @@ Get the mouse location and move it.
 ```JavaScript
 var robot = require("robotjs");
 
-//Get the mouse position, retuns an object with x and y. 
+//Get the mouse position, returns an object with x and y. 
 var mouse=robot.getMousePos();
 console.log("Mouse is at x:" + mouse.x + " y:" + mouse.y);