[css-display-3] Reorder examples to match grammar. w3c#1621

Author: fantasai

css-display-3/Overview.bs

@@ -238,12 +238,12 @@ Box Layout Modes: the 'display' property</h2>
 				<td><a>run-in box</a> (<a>inline box</a> with special box-tree-munging rules)
 			<tr>
 				<td>''list-item''
-				<td>''list-item block flow''
+				<td>''block flow list-item''
 				<td><a>block box</a>
 				    with additional <a href="https://www.w3.org/TR/CSS2/generate.html#lists">marker box</a>
 			<tr>
 				<td>''inline list-item''
-				<td>''list-item inline flow''
+				<td>''inline flow list-item''
 				<td><a>inline box</a>
 				    with additional <a href="https://www.w3.org/TR/CSS2/generate.html#lists">marker box</a>
 		<tbody title="Formatting Context Root Display Types">