Match MDX example to new props

Author: brianespinosa

packages/mdx/dev/content/slideshow-onchange.mdx

@@ -2,7 +2,7 @@
 
 Internal CH.Slideshow state object is being logged to console from the onChange event. CH.Slideshow is also being initialized on a different slide number.
 
-<CH.Slideshow preset="https://codesandbox.io/s/rfdho" code={{minZoom: 0.5}} initialSlideIndex={5} onChange={(obj) => console.log(obj)}>
+<CH.Slideshow preset="https://codesandbox.io/s/rfdho" code={{minZoom: 0.5}} start={5} onChange={(obj) => console.table(obj)}>
 
 <CH.Code>