Fix typo

Author: Psychpsyo

css-content-3/Overview.bs

@@ -491,8 +491,8 @@ Inserting Quotation Marks: the ''*-quote'' keywords</h4>
 		<dd>
 			These values are replaced by the appropriate string
 			as defined by the 'quotes' property,
-			and increments (for ''no-open-quote'')
-			or decrements (for ''no-close-quote'')
+			and increments (for ''open-quote'')
+			or decrements (for ''close-quote'')
 			the level of nesting for quotes.
 
 		<dt><dfn>no-open-quote</dfn>