Made the additive-glyphs grammar correctly specify a comma-separated list.

Author: tabatkins

css3-lists/Overview.html

@@ -2251,7 +2251,7 @@ <h3 id=counter-style-glyphs><span class=secno>8.7. </span> Marker
     <tr>
      <th>Value:
 
-     <td>[ &lt;integer> && [ &lt;string> | &lt;image> ] ]+
+     <td>[ &lt;integer> && [ &lt;string> | &lt;image> ] ]#
 
     <tr>
      <th>Initial:

css3-lists/Overview.src.html

@@ -1515,7 +1515,7 @@ <h3 id='counter-style-glyphs'>
 			<td><dfn id="descdef-additive-glyphs">additive-glyphs</dfn>
 		<tr>
 			<th>Value:
-			<td>[ &lt;integer> && [ &lt;string> | &lt;image> ] ]+
+			<td>[ &lt;integer> && [ &lt;string> | &lt;image> ] ]#
 		<tr>
 			<th>Initial:
 			<td>N/A