[css-syntax] Give a shorter linking text to the parse-according-to-a-grammar term.

Author: tabatkins

css-syntax/Overview.bs

@@ -2081,7 +2081,7 @@ Parse something according to a CSS grammar</h4>
 	such as, for example, by invoking a CSS serialization algorithm
 	(like "serialize as a CSS <<string>> value").
 
-	To <dfn export>parse something according to a CSS grammar</dfn>:
+	To <dfn export lt="parse something according to a CSS grammar|parse" for=CSS>parse something according to a CSS grammar</dfn>:
 
 	<ol>
 		<li>