[selectors-4] Cross-link “specificity”. w3c#6932

Author: fantasai

selectors-4/Overview.bs

@@ -1199,8 +1199,8 @@ The Specificity-adjustment Pseudo-class: '':where()''</h3>
 	is a functional pseudo-class
 	with the same syntax and functionality as '':is()''.
 	Unlike '':is()'', neither the '':where()'' pseudo-class, nor any of its arguments,
-	contribute to the specificity of the selector--
-	its specificity is always zero.
+	contribute to the [=specificity=] of the selector--
+	its [=specificity=] is always zero.
 
 	This is useful for introducing filters in a selector
 	while keeping the associated style declarations easy to override.