8255215: Unsupported 'valign' attribute for 'tr' tag used in j.s.t.h.HTMLDocument

Reviewed-by: serb

Author: prsadhuk

src/java.desktop/share/classes/javax/swing/text/html/HTMLDocument.java

@@ -194,7 +194,7 @@
  *     <th><code>setInnerHTML</code></th>
  *     <th><code>setOuterHTML</code></th>
  *   </tr>
- *   <tr valign="top">
+ *   <tr style="vertical-align:top">
  *     <td style="white-space:nowrap">
  *       <div style="background-color: silver;">
  *         <p>Paragraph 1</p>