Fix typo in prepareClientToWrite() comment.
Fix typo in prepareClientToWrite() comment.

4396/redis,xuguruogu/redis,pedigree/redis,xuguruogu/redis,4396/redis,pedigree/redis,xuguruogu/redis,janekmi/redis,janekmi/redis,pedigree/redis,janekmi/redis,4396/redis,pedigree/redis,janekmi/redis,xuguruogu/redis,4396/redis