role=term supports aria-expanded

Added aria-expanded to supporting properties for role=term

/cc @sideshowbarker

index.html

@@ -1634,7 +1634,7 @@ <h2 id="allowed-aria-roles-states-and-properties">Allowed ARIA roles, states and
 	  <TD id="index-aria-term" tabindex="-1"><a href="https://www.w3.org/TR/wai-aria-1.1/#term"><code>term</code></a> - <span class="new-feature" >(new)</span></TD>
 	  <TD>A word or phrase with a corresponding definition. See related <a href="#index-aria-definition">definition</a>.</TD>
 	  <TD>none</TD>
-	  <TD>&nbsp;</TD>
+	  <TD><code><a href="http://www.w3.org/TR/wai-aria-1.1/#aria-expanded">aria-expanded (state)</a></code></TD>
 	  <TD><a href="http://w3c.github.io/html/dom.html#phrasing-content">Phrasing content</a></TD>
 	  <TD><a href="http://w3c.github.io/html/dom.html#phrasing-content">Phrasing content</a></TD>
 	  </TR>