[css-fonts-4] font-family descriptor in @font-palette-values matches same list as font-family in @font-face. w3c#6916

Author: svgeesus

css-fonts-4/Overview.bs

@@ -7047,7 +7047,8 @@ Font family: the 'font-family!!descriptor' descriptor</h4>
     Initial: N/A
     </pre>
 
-    This descriptor defines the font families that this palette applies to.
+    This descriptor defines the font families that this palette applies to,
+	using the same list of font families as [#font-matching-algorithm].
     This palette will only ever be applied to the fonts with these family names.
     The value of this descriptor  means that only named font families are allowed
     and rules that include generic fonts in the list of font families