Documentation example correction for per topic configs

[Soumyajit Sahu]

The Kafka documentation here (
http://kafka.apache.org/081/documentation.html#topic-config) mentions the
following as an example:

*> bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic
my-topic --partitions 1
        --replication-factor 1 --config max.message.bytes=64000
--config flush.messages=1*

and

*> bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic my-topic
    --config max.message.bytes=128000*

The configs must be put in double quotes here, i.e. *--config
*"*flush.messages=1".*

The documentation for 0.8.2 also would need the correction.

Regards,

Soumyajit Sahu