updated meter default role to reflect HTML-AAM

fixes w3c/html-aria#44

Author: stevefaulkner

html-aria/index.html

@@ -620,7 +620,7 @@ <h2 id="docconformance">Document conformance requirements for use of ARIA attrib
     </TR>
     <TR id="meter" tabindex="-1">
       <TD><code><a href="http://www.w3.org/TR/html51/semantics.html#the-meter-element">meter</a> </code>
-      <TD><code>role=<a href="#index-aria-progressbar">progressbar</a></code></TD>
+      <TD><a>No corresponding role</a></TD>
       <TD><a href="#index-aria-global">global <code>aria-*</code> attributes</a></TD>
     </TR>
     <TR id="nav" tabindex="-1">