[css-color-5] Added display-p3-linear tocolor spaces for interpolation w3c#12596

Author: svgeesus

css-color-5/Overview.bs

@@ -2797,7 +2797,7 @@ or any other color or monochrome output device which has been characterized.
 
 	<pre class='prod'>
 		<dfn export>&lt;color-space></dfn> = <<rectangular-color-space>> | <<polar-color-space>> | <<custom-color-space>>
-		<dfn export>&lt;rectangular-color-space></dfn> = <l>''srgb''</l> | <l>''srgb-linear''</l> | <l>''display-p3''</l> | <l>''a98-rgb''</l> | <l>''prophoto-rgb''</l> | <l>''rec2020''</l> | <l>''lab''</l> | <l>''oklab''</l> | <<xyz-space>>
+		<dfn export>&lt;rectangular-color-space></dfn> = <l>''srgb''</l> | <l>''srgb-linear''</l> | <l>''display-p3''</l> | <l>''display-p3-linear''</l> | <l>''a98-rgb''</l> | <l>''prophoto-rgb''</l> | <l>''rec2020''</l> | <l>''lab''</l> | <l>''oklab''</l> | <<xyz-space>>
 		<dfn export>&lt;polar-color-space></dfn> = <l>''hsl''</l> | <l>''hwb''</l> | <l>''lch''</l> | <l>''oklch''</l>
 		<dfn export>&lt;custom-color-space></dfn> = <<dashed-ident>>
 		<dfn export>&lt;hue-interpolation-method></dfn> = [ shorter | longer | increasing | decreasing ] hue