Update the NPC Dialog Boxes page to match up with modern GUIs

A lot of the images/GIFs have pretty old menus and pictures, like the old Studio Explorer layout, the old Dialog GUI, the old stud textures, and the menus.

Edit: Also, the Script Examples are not apart of “Code Samples”, and they don’t specify that you have to use LocalScripts for those code samples unless you go to the DialogChoiceSelected page.

Edit 2: In the Related Articles section of the page, the link to “Shop Dialogs” doesn’t work and seems to be a remnant from the wiki.roblox.com transfer.