[whatwg] Contradictory description of online whitelist prefixes

[Nikolas Coukouma]

Section 6.6.2 "Application caches" says
  Zero or more URLs that form the online whitelist namespaces.

  These are used as prefix match patterns, and declare URLs that the
user agent will never load from the cache but will instead always
attempt to obtain from the network.

The above doesn't seem accurate since section 6.6.6 "Changes to the
networking model" was altered (in 2008) so that, in the case of an
entry matching the online whitelist, the entry is loaded from the
cache.