Clarify status of drafts

Author: geraintluff

documentation.html

@@ -50,7 +50,7 @@ <h2>Specification</h2>
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-    <p>They are also available on the IETF main site: <a href="http://tools.ietf.org/html/draft-zyp-json-schema-04">core</a>,  <a href="http://tools.ietf.org/html/draft-fge-json-schema-validation-00">validation</a> and <a href="http://tools.ietf.org/html/draft-luff-json-hyper-schema-00">hyper-schema</a>.
+    <p>They are also available as Internet Drafts on the IETF site: <a href="http://tools.ietf.org/html/draft-zyp-json-schema-04">core</a>,  <a href="http://tools.ietf.org/html/draft-fge-json-schema-validation-00">validation</a> and <a href="http://tools.ietf.org/html/draft-luff-json-hyper-schema-00">hyper-schema</a>.
 </div>
 
 <h2>Meta-schemas</h2>