[whatwg] minor style issue

[Håkon Wium Lie]

I suggest we add this line to the style of our specifications so that
long lines break when necessary:

   pre { white-space: pre-wrap }

To see and example of where it makes a differnece, search for "The
drag-and-drop processing model" in the HTML 5 draft.

Cheers,

-h&kon
              Håkon Wium Lie                          CTO °þe®ª
howcome at opera.com                  http://people.opera.com/howcome