[scroll-animations-1] Fix link to type (#8043)

Author: bramus

scroll-animations-1/Overview.bs

@@ -696,7 +696,7 @@ spec: cssom-view-1; type: dfn;
 		<<keyframe-selector>> = from | to | <<percentage>> | <<timeline-range-name>> <<percentage>>
 	</pre>
 
-	where <<timeline-range-name> is the [=CSS identifier=]
+	where <<timeline-range-name>> is the [=CSS identifier=]
 	that represents a chosen predefined [=named timeline range=],
 	and the <<percentage>> after it represents the percentage progress
 	between the start and end of that [=named timeline range=].