Update css-values-4/Overview.bs

Co-authored-by: Tab Atkins Jr. <jackalmage@gmail.com>

Author: noamr

css-values-4/Overview.bs

@@ -993,9 +993,11 @@ URL Modifiers</h4>
 URL processing model</h4>
 
 	<div algorithm>
-		To <dfn export>fetch a style resource</dfn> [=/url=] |url|, given a {{CSSStyleSheet}}
-		|sheet|, a string |destination|, a "no-cors" or "cors" |corsMode|, and an algorithm
-		|processResponse| accepting a [=/response=]:
+		To <dfn export>fetch a style resource</dfn> from [=/url=] |url|, 
+		given a {{CSSStyleSheet}} |sheet|, 
+		a string |destination| matching a {{RequestDestination}}, 
+		a "no-cors" or "cors" |corsMode|, 
+		and an algorithm |processResponse| accepting a [=/response=]:
 
 		1. Let |environmentSettings| be |sheet|'s [=relevant settings object=].