[css-sizing] Markup fix. Fixes w3c#2318.

Author: tabatkins

css-sizing-3/Overview.bs

@@ -287,7 +287,7 @@ Sizing Properties</h3>
 	Note: Additional <a>flow-relative</a> aliases to these properties are defined in [[CSS-LOGICAL-1]].
 
 <h4 id="preferred-size-properties">
-Preferred Size Properties: the 'width and 'height' properties</h4>
+Preferred Size Properties: the 'width' and 'height' properties</h4>
 
 	<pre class=propdef>
 	Name: width, height
@@ -304,7 +304,7 @@ Preferred Size Properties: the 'width and 'height' properties</h4>
 	the preferred (<a>physical</a>) <dfn>width</dfn> and <dfn>height</dfn> of the box, respectively.
 
 <h4 id="min-size-properties">
-Minimum Size Properties: the 'min-width and 'min-height' properties</h4>
+Minimum Size Properties: the 'min-width' and 'min-height' properties</h4>
 
 	<pre class=propdef>
 	Name: min-width, min-height
@@ -326,7 +326,7 @@ Minimum Size Properties: the 'min-width and 'min-height' properties</h4>
 	in [[CSS2]] the initial value was zero.
 
 <h4 id="max-size-properties">
-Maximum Size Properties: the 'max-width and 'max-height' properties</h4>
+Maximum Size Properties: the 'max-width' and 'max-height' properties</h4>
 
 	<pre class=propdef>
 	Name: max-width, max-height