[csswg-drafts] [css2] typo in example

babatakao has just created a new issue for 
https://github.com/w3c/csswg-drafts:

== [css2] typo in example ==
https://drafts.csswg.org/css2/generate.html#undisplayed-counters

This example uses pseudo-element with two colons, which is not defined
 by CSS2.

    h1::before {
        content: normal;
        counter-increment: heading;
    }

Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/530 using your GitHub 
account