[css-color-4] export definitions

Author: svgeesus

css-color-4/Overview.bs

@@ -238,7 +238,7 @@ Resolving <<color>> Values</h3>
 <h2 id='numeric-srgb'>
 sRGB Colors</h2>
 
-	CSS colors in the <dfn>sRGB</dfn> color space
+	CSS colors in the <dfn id='sRGB' export>sRGB</dfn> color space
 	are represented by a triplet of values--
 	red, green, and blue--
 	identifying a point in the sRGB color space [[!SRGB]].
@@ -1813,7 +1813,7 @@ Converting sRGB colors to Lab colors</h3>
 
 	<!-- make these steps links to the appropriate section in a calculations appendix -->
 	<ol>
-		<li>Convert from sRGB to <dfn>linear-light sRGB</dfn> (undo gamma encoding).
+		<li>Convert from sRGB to <dfn id="linear-light-sRGB" export>linear-light sRGB</dfn> (undo gamma encoding).
 			This has the same gamut as sRGB,
 			but is now additive,
 			so that arithmetic operations on the values