[css-fonts-4][editorial] wpt

Author: svgeesus

css-fonts-4/Overview.bs

@@ -3065,6 +3065,9 @@ Font property descriptors: the 'font-style!!descriptor', 'font-weight!!descripto
 	font-face-weight-auto-static.html
 	font-face-weight-auto-variable.html
 	font-face-weight-default-variable.html
+	font-face-sign-function.html
+	font-size-sign-function.html
+	font-style-sign-function.html
 	variations/font-descriptor-range-reversed.html
 </wpt>