[css-values-5][editorial] fix typo

Author: tabatkins

css-values-5/Overview.bs

@@ -3468,7 +3468,7 @@ Argument Grammars and Spread Syntax</h3>
 	and the <<declaration-value>> production.
 	See the ''if()'' function for an example.
 
-	Each function, in its [=resolution=] algorithm,
+	Each function, in its [=replacement=] algorithm,
 	will apply [=substitution=] to its arguments
 	and then [=CSS/parse=] them
 	according to the appropriate parts of its standard grammar.