Correct a wrong example that was mentioned in the doc

Author: ValentinH

README.md

@@ -137,7 +137,7 @@ $scope.translate = function(value)
 
 ## Slider events
 
-To force slider to recalculate dimensions broadcast **reCalcViewDimensions** event from parent scope. This is useful for example when you use slider with tabs - see *demo/tabs.html* example.
+To force slider to recalculate dimensions broadcast **reCalcViewDimensions** event from parent scope. This is useful for example when you use slider inside a widget where the content is hidden at start - see the "Sliders into modal" example [on the demo site](http://rzajac.github.io/angularjs-slider/).
 
 You can also force redraw with **rzSliderForceRender** event.