[css-page-3] Fix markup

Author: fantasai

css-page-3/Overview.bs

@@ -2314,7 +2314,7 @@ CSS 2.1 properties that apply within the margin contexts</h3>
 			<tr><td>margin-left
 			<tr><td>margin
 		<tbody>
-			<tr><td rowspan="5"><a href="https://www.w3.org/TR/CSS21/ui.html#dynamic-outlines">outline properties</a>
+			<tr><td rowspan="4"><a href="https://www.w3.org/TR/CSS21/ui.html#dynamic-outlines">outline properties</a>
 				<td>outline-width
 			<tr><td>outline-style
 			<tr><td>outline-color

css-page-3/Overview.html

@@ -2239,7 +2239,7 @@ <h3 class="no-num heading settled" id="margin-property-list"><span class="conten
       <td>margin 
     <tbody>
      <tr>
-      <td rowspan="5"><a href="https://www.w3.org/TR/CSS21/ui.html#dynamic-outlines">outline properties</a> 
+      <td rowspan="4"><a href="https://www.w3.org/TR/CSS21/ui.html#dynamic-outlines">outline properties</a>
       <td>outline-width 
      <tr>
       <td>outline-style