[mediaqueries-4] Add white point to chromaticity references

Author: frivoal

mediaqueries/Overview.bs

@@ -1629,15 +1629,15 @@ Color Display Quality: the 'color-gamut' feature</h3>
 	The following table lists the primary colors of these color spaces in terms of their color space chromaticity coordinates,
 	as defined in [[!COLORIMETRY]].
 	<table class=data>
-	<colgroup span="1"></colgroup><colgroup span="2"></colgroup><colgroup span="2"></colgroup><colgroup span="2"></colgroup>
+	<colgroup span="1"></colgroup><colgroup span="2"></colgroup><colgroup span="2"></colgroup><colgroup span="2"></colgroup><colgroup span="2"></colgroup>
 	<thead>
-	<tr><th rowspan=3>Color Space<th colspan=6>Primaries
+	<tr><th rowspan=3>Color Space<th colspan=2 rowspan=2>White Point<th colspan=6>Primaries
 	<tr><th colspan=2>Red<th colspan=2>Green<th colspan=2>Blue
-	<tr><th>x<sub>R</sub><th>y<sub>R</sub><th>x<sub>G</sub><th>y<sub>G</sub><th>x<sub>B</sub><th>y<sub>B</sub>
+	<tr><th>x<sub>W</sub><th>y<sub>W</sub><th>x<sub>R</sub><th>y<sub>R</sub><th>x<sub>G</sub><th>y<sub>G</sub><th>x<sub>B</sub><th>y<sub>B</sub>
 	<tbody>
-	<tr><td>srgb<td>0.640<td>0.330<td>0.300<td>0.600<td>0.150<td>0.060
-	<tr><td>p3<td>0.680<td>0.320<td>0.265<td>0.690<td>0.150<td>0.060
-	<tr><td>rec2020<td>0.708<td>0.292<td>0.170<td>0.797<td>0.131<td>0.046
+	<tr><td>srgb<td>0.3127<td>0.3290<td>0.640<td>0.330<td>0.300<td>0.600<td>0.150<td>0.060
+	<tr><td>p3<td>0.3127<td>0.3290<td>0.680<td>0.320<td>0.265<td>0.690<td>0.150<td>0.060
+	<tr><td>rec2020<td>0.3127<td>0.3290<td>0.708<td>0.292<td>0.170<td>0.797<td>0.131<td>0.046
 
 	</table>