[css-color-4][editorial] update wpt

Author: svgeesus

css-color-4/Overview.bs

@@ -6297,17 +6297,15 @@ animation/color-composition.html
 animation/color-interpolation.html
 animation/opacity-interpolation.html
 color-mix-basic-001.html
-parsing/color-invalid.html
-
+nested-color-mix-with-currentcolor.html
 
+parsing/color-invalid.html
 parsing/color-computed-color-mix-function.html
 parsing/color-invalid-color-mix-function.html
 parsing/color-valid-color-mix-function.html
-
 parsing/color-computed-relative-color.html
 parsing/color-invalid-relative-color.html
 parsing/color-valid-relative-color.html
-
 parsing/color-computed-color-contrast-function.html
 parsing/color-invalid-color-contrast-function.html
 parsing/color-valid-color-contrast-function.html