editorial: webarch fragments weren't preserved across drafts

I used
  http://www.w3.org/TR/webarch/#implied-dereference
in a discussion and it didn't survive the recent update.

Last version:
http://www.w3.org/TR/2004/PR-webarch-20041105/#pr-implied-dereference

Previous Version:
http://www.w3.org/TR/2004/WD-webarch-20040816/#implied-dereference

Please arrange for #implied-dereference to resolve to
something relevant.

-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
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