doc for “fs.s3a.acl.default” indicates incorrect values

description for "fs.s3a.acl.default" indicates its values are "private,public-read....";
when set value be public-read,and excute 'hdfs dfs -ls s3a://hdfs/'
-ls: No enum constant com.amazonaws.services.s3.model.CannedAccessControlList.public-read
while in amazon-sdk ,

public enum CannedAccessControlList {
  Private("private"),
  PublicRead("public-read"),
  PublicReadWrite("public-read-write"),
  AuthenticatedRead("authenticated-read"),
  LogDeliveryWrite("log-delivery-write"),
  BucketOwnerRead("bucket-owner-read"),
  BucketOwnerFullControl("bucket-owner-full-control"); 

so values should be enum values as "Private","PublicRead"...
attached simple patch.