[css-text-decor-3] Slightly better wording for emphasis marks + ruby positioning.

Author: fantasai

css-text-decor-3/Overview.html

@@ -1565,9 +1565,9 @@ <h3 id=text-emphasis-position-property><span class=secno>3.4. </span>
    </table>
   </div>
 
-  <p>If emphasis marks are drawn for characters for which ruby is drawn in
-   the same position as the emphasis mark, the ruby should be stacked between
-   the emphasis marks and the base text.
+  <p>If emphasis marks are applied to characters for which ruby is drawn in
+   the same position as the emphasis mark, the emphasis marks are placed
+   above the ruby.
 
   <div class=figure>
    <p><img

css-text-decor-3/Overview.src.html

@@ -1051,9 +1051,9 @@ <h3 id="text-emphasis-position-property">
     </table>
   </div>
 
-  <p>If emphasis marks are drawn for characters
+  <p>If emphasis marks are applied to characters
     for which ruby is drawn in the same position as the emphasis mark,
-    the ruby should be stacked between the emphasis marks and the base text.
+    the emphasis marks are placed above the ruby.
 
   <div class="figure">
     <p><img