[css-ui-3] (Editorial) Improve markup of the cursor definitions

Author: frivoal

css-ui/Overview.bs

@@ -980,7 +980,9 @@ User agents may ignore the cursor property over native user-agent controls such
 
 Values have the following meanings:
 
-image cursors
+<dl>
+<dt>image cursors
+<dd>
 <dl>
 <dt><<url>></dt>
 <dd>The user agent retrieves the cursor from the resource designated by the URI.
@@ -1060,7 +1062,8 @@ they must be clamped (independently) to fit.
 </dd>
 </dl>
 
-general purpose cursors
+<dt>general purpose cursors
+<dd>
 
 <dl>
 <dt style="cursor:auto">auto</dt>
@@ -1098,7 +1101,8 @@ Often rendered as a watch or hourglass.
 </dd>
 </dl>
 
-selection cursors
+<dt>selection cursors
+<dd>
 <dl>
 <dt style="cursor:cell">cell</dt>
 <dd>Indicates that a cell or set of cells may be selected. Often rendered as a thick plus-sign with a dot in the middle.</dd>
@@ -1117,7 +1121,8 @@ any angle of I-beam/cursor for text that is rendered at any particular angle.
 <dd>Indicates vertical-text that may be selected. Often rendered as a horizontal I-beam.</dd>
 </dl>
 
-drag and drop cursors
+<dt>drag and drop cursors
+<dd>
 <dl>
 <dt style="cursor:alias">alias</dt>
 <dd>Indicates an alias of/shortcut to something is to be created.
@@ -1144,7 +1149,8 @@ Often rendered as a circle with a line through it.
 <dd>Indicates that something is being grabbed (dragged to be moved). Often rendered as the backside of a hand with fingers closed mostly out of view.</dd>
 </dl>
 
-resizing and scrolling cursors
+<dt>resizing and scrolling cursors
+<dd>
 <dl>
 <dt>
 <span style="cursor:e-resize">e-resize</span>,
@@ -1180,7 +1186,8 @@ Often rendered as arrows pointing up, down, left, and right with a dot in the mi
 </dd>
 </dl>
 
-zooming cursors
+<dt>zooming cursors
+<dd>
 <dl>
 <dt>
 <span style="cursor:zoom-in"> zoom-in</span>,
@@ -1191,6 +1198,7 @@ Indicates that something can be zoomed (magnified) in or out, and
 often rendered as a magnifying glass with a "+" or "-" in the center of the glass, for ''zoom-in'' and ''zoom-out'' respectively.
 </dd>
 </dl>
+</dl>
 
 The UA may treat unsupported values as ''cursor/auto''.
 E.g. on platforms that do not have a concept of a ''context-menu'' cursor,