[css-shapes-2] Fix markup

Author: fantasai

css-shapes-2/Overview.bs

@@ -341,30 +341,24 @@ The 'shape-inside' Property</h4>
 
 	The values of this property have the following meanings:
 
-	<dl>
-		<dt><dfn for=shape-inside>''auto''</dfn></dt>
+	<dl dfn-type=value dfn-for=shape-inside>
+		<dt><dfn>''auto''</dfn>
 		<dd>
 			The shape is computed based on the content box of the element.
-		</dd>
-	</dl>
-	<dl>
-		<dt><dfn for=shape-inside>''outside-shape''</dfn></dt>
+
+		<dt><dfn>''outside-shape''</dfn>
 		<dd>
 			The shape is computed based on
 			the shape defined by the shape-outside
 			and shape-margin properties.
-		</dd>
-	</dl>
-	<dl>
-		<dt><dfn>&lt;basic-shape&gt;</dfn></dt>
+
+		<dt><dfn>&lt;basic-shape&gt;</dfn>
 		<dd>
 			The shape is computed based
 			on the values of one of
 			''inset()'', ''circle()'', ''ellipse()'' or ''polygon()''.
-		</dd>
-	</dl>
-	<dl>
-		<dt><dfn>&lt;uri&gt;</dfn></dt>
+
+		<dt><dfn>&lt;uri&gt;</dfn>
 		<dd>
 			If the &lt;uri&gt; references an SVG shape element,
 			that element defines the shape.
@@ -376,14 +370,11 @@ The 'shape-inside' Property</h4>
 			If the &lt;uri&gt; does not reference
 			an SVG shape element or an image,
 			the effect is as if the value ''auto'' had been specified.
-		</dd>
-	</dl>
-	<dl>
-		<dt><dfn for=shape-inside>''display''</dfn></dt>
+
+		<dt><dfn>''display''</dfn>
 		<dd>
 			The shape is computed based on the shape of the display
 			as described in <a href="https://drafts.csswg.org/css-round-display">css-round-display</a>.
-		</dd>
 	</dl>
 
 	The 'shape-inside' property applies to floats.