caching - How i check cache for sites.google -

i want check cache page https://sites.google.com/site/unblockedgames333/ submit url , google it's not show cache option there way check page cache ?

i try http://webcache.googleusercontent.com/search?q=cache:stackoverflow.com it's not work there other way check.

instructions: in chrome, open new tab , navigate chrome://cache/ click on whichever file want view. should see page bunch of text , numbers. copy text on page. paste in text box below. press "go". cached data appear in results section below.