Help how do i change this public_html directory

[Mario27]

hello i reformatted my pc last night now i get this

when i go here

onlinekeystore.nl

To change this page, upload your website into the public_html directory

i never had this befor i wanted to buy a key but i dont no how to change it could anyone explain me?

 

[Mario27]

nevermind it was .com not nl.