Minor doc fixes.

chrome/common/extensions/docs/static/i18n.html

 <div id="pageData-name" class="pageData">Internationalization (i18n)</div>
 
 <!--
 [NOTEs for editors:
  * Try to be consistent about string vs. message (it's probably not yet).
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 <p id="classSummary">
 An <em>internationalized</em> extension
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 <h3 id="locales-supported">Supported locales</h3>
 
 <p>
 Your extension can use any of the following locales:
 </p>
 
 <p>
 <code>am  ar  bg  bn  ca  cs  da  de  el  en  en_GB  en_US  es  es_419  et  fi  fil  fr  gu  he  hi  hr  hu  id  it  ja  kn  ko  lt
-lv  ml  mr  nb  nl  or  pl  pt  pt_BR  pt_PT  ro  ru  sk  sl  sr  sv  sw  ta  te  th  tr  uk  vi  zh  zh_CN  zh_TW</code>
+lv  ml  mr <!-- nb --> nl  or  pl  pt  pt_BR  pt_PT  ro  ru  sk  sl  sr  sv  sw  ta  te  th  tr  uk  vi  zh  zh_CN  zh_TW</code>
 </p>
 
 
 <h3 id="locales-usage">How extensions find strings</h3>
 
 <p>
 You don't have to define every string for every locale
 that your internationalized extension supports.
 As long as the default locale's <code>messages.json</code> file
 has a value for every string,
@@ skipping 257 matching lines @@
   })
 }
 </pre>
 
 <p>
 For details on calling <code>getAcceptLanguages()</code>, see the
 <a href="#method-getAcceptLanguages">API reference</a>.
 </p>
 
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