fix logic error, which only effected when more than 2 entries in smart or straight prop

Author: trueberryless

lib/index.js

@@ -116,7 +116,7 @@ export default function retextQuotes(options) {
           expected = preferred === 'smart' ? '’' : "'"
         } else {
           const markers = preferred === 'smart' ? smart : straight
-          expected = markers[(stack.length + 1) % markers.length]
+          expected = markers[(stack.length - 1) % markers.length]
 
           if (expected.length > 1) {
             expected = expected.charAt(style.type === 'open' ? 0 : 1)