[css-values-4][editorial] Fix linking error

Author: tabatkins

css-values-4/Overview.bs

@@ -2095,7 +2095,7 @@ Font-relative Lengths: the ''em'', ''rem'', ''ex'', ''rex'', ''cap'', ''rcap'',
 	the element’s own metrics when used in 'line-height'.)
 
 	Note: Most properties defined in [[css-fonts-4]] are [=font-affecting properties=],
-	as is 'math-scale'.
+	as is 'math-style' and 'math-depth'.
 	(This isn't necessarily an exhaustive list.)
 
 	When used outside the context of an element