[css-color-4] Colspans beyond table (w3c#5943)

Author: nschonni

css-color-4/Overview.bs

@@ -3650,7 +3650,7 @@ Predefined colorspaces: ''srgb'', ''display-p3'', ''a98-rgb'', ''prophoto-rgb'',
 				<table>
 					<tr>
 						<th>Percentages</th>
-						<td  colspan="2">Disallowed</td>
+						<td>Disallowed</td>
 					</tr>
 				</table>
 
@@ -3692,7 +3692,7 @@ Predefined colorspaces: ''srgb'', ''display-p3'', ''a98-rgb'', ''prophoto-rgb'',
 				<table>
 					<tr>
 						<th>Percentages</th>
-						<td  colspan="2">Required for L; disallowed for a and b.</td>
+						<td>Required for L; disallowed for a and b.</td>
 					</tr>
 				</table>