Fix typo in example

Author: tabatkins

css3-flexbox/Overview.html

@@ -29,11 +29,11 @@
 
    <h1 id=head-box-flexible>CSS Flexible Box Layout Module</h1>
 
-   <h2 class="no-num no-toc" id=w3c-working>Editor's Draft, 6 February 2012</h2>
+   <h2 class="no-num no-toc" id=w3c-working>Editor's Draft, 7 February 2012</h2>
 
    <dl>
     <dt>This version:
-     <!--<dd><a href="http://www.w3.org/TR/2012/ED-css3-flexbox-20120206/">http://www.w3.org/TR/2012/ED-css3-flexbox-20120206/</a>-->
+     <!--<dd><a href="http://www.w3.org/TR/2012/ED-css3-flexbox-20120207/">http://www.w3.org/TR/2012/ED-css3-flexbox-20120207/</a>-->
 
 
     <dd><a
@@ -908,7 +908,7 @@ <h3 id=flex-flow><span class=secno>3.3. </span> Flex Direction and Wrap:
      <tr>
       <td>
        <pre>
-div { writing-mode: tb-rl;
+div { writing-mode: vertical-rl;
       flex-flow: column wrap-reverse; }
 /* Main axis is block direction (right to 
    left). New lines wrap upwards. */</pre>

css3-flexbox/Overview.src.html

@@ -399,7 +399,7 @@ <h3 id='flex-flow'>
 				<td><img src='images/flex-flow2.svg' width=170 height=200>
 			<tr>
 				<td><pre>
-div { writing-mode: tb-rl;
+div { writing-mode: vertical-rl;
       flex-flow: column wrap-reverse; }
 /* Main axis is block direction (right to 
    left). New lines wrap upwards. */</pre>