[css-values] typo

Author: tabatkins

css-values/Overview.bs

@@ -1356,7 +1356,7 @@ Toggling Between Values: ''toggle()''</h3>
 	Note: Note that ''toggle()'' explicitly looks at the computed value of the parent,
 	so it works even on non-inherited properties.
 	This is similar to the ''inherit'' keyword,
-	which is works even on non-inherited properties.
+	which works even on non-inherited properties.
 
 	Note: Note that the <a href="http://www.w3.org/TR/CSS21/cascade.html#computed-value">computed value</a> of a property is an abstract set of values,
 	not a particular serialization [[!CSS21]],