fix: typo

Author: vwkd

css-values-4/Overview.bs

@@ -1016,7 +1016,7 @@ Compatible Units</h4>
 	all value types (percentages, numbers, keywords, etc.)
 	that represent lengths are considered <a>compatible</a> with lengths.
 	Likewise any future API that returns <a>used values</a>
-	must consider any values represent distances/durations/frequencies/etc.
+	must consider any values that represent distances/durations/frequencies/etc.
 	as <a>compatible</a> with the relevant class of <a>dimensions</a>,
 	and canonicalize accordingly.