minor correction of code comments

Author: svgeesus

css-color-4/conversions.js

@@ -167,9 +167,11 @@ function gam_a98rgb(RGB) {
 }
 
 function lin_a98rgb_to_XYZ(rgb) {
-	// convert an array of linear-light ProPhotoRGB values to CIE XYZ
+	// convert an array of linear-light a98rgb values to CIE XYZ
 	// using  D50 (so no chromatic adaptation needed afterwards)
 	// http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
+	// which has greater numerical precsion than section 4.3.5.3 of
+	// https://www.adobe.com/digitalimag/pdfs/AdobeRGB1998.pdf
 	var M = Math.matrix([
 	[ 0.5766690429101305,   0.1855582379065463,   0.1882286462349947  ],
 	[ 0.29734497525053605,  0.6273635662554661,   0.07529145849399788 ],
@@ -180,7 +182,7 @@ function lin_a98rgb_to_XYZ(rgb) {
 }
 
 function XYZ_to_lin_a98rgb(XYZ) {
-	// convert XYZ to linear-light ProPhotoRGB
+	// convert XYZ to linear-light a98rgb
 	var M = Math.matrix([
 	[  2.0415879038107465,    -0.5650069742788596,   -0.34473135077832956 ],
 	[ -0.9692436362808795,     1.8759675015077202,    0.04155505740717557 ],