Fix redisBufferRead documentation
Fix redisBufferRead documentation

Referred to redisContextReadReply which I cannot find in this codebase
nor the old redis-tools one. Presumably this meant to say
redisGetReplyFromReader which is how redisBufferRead is used in this
file. Could've also meant the interface function redisReaderGetReply.

redis/hiredis,redis/hiredis,jinguoli/hiredis,jinguoli/hiredis,redis/hiredis,jinguoli/hiredis