Fix syntax error

Author: fantasai

css3-flexbox/Overview.html

@@ -1098,7 +1098,7 @@ <h3 id=visibility-collapse><span class=secno>4.3. </span> Collapsed Items</h3>
 <!--		-->    #main {
 <!--		-->      flex: 1;         /* <a
     href="#flexibility">Main takes up all remaining space</a> */
-<!--		-->      order: 1         /* <a
+<!--		-->      order: 1;        /* <a
     href="#order-property">Place it after (to the right of) the navigation</a> */
 <!--		-->      min-width: 12em; /* <a
     href="#min-size-opt">Optimize main content area sizing</a> */

css3-flexbox/Overview.src.html

@@ -771,7 +771,7 @@ <h3 id='visibility-collapse'>
 <!--		-->    header + div { display: flex; }
 <!--		-->    #main {
 <!--		-->      flex: 1;         /* <a href="#flexibility">Main takes up all remaining space</a> */
-<!--		-->      order: 1         /* <a href="#order-property">Place it after (to the right of) the navigation</a> */
+<!--		-->      order: 1;        /* <a href="#order-property">Place it after (to the right of) the navigation</a> */
 <!--		-->      min-width: 12em; /* <a href="#min-size-opt">Optimize main content area sizing</a> */
 <!--		-->    }
 <!--		-->  }