Update logstash-500-kafka-bro.conf
Update logstash-500-kafka-bro.conf

named parse failure the wrong field

rocknsm/rock,rocknsm/rock,spartan782/rock,rocknsm/SimpleRock,spartan782/rock,CyberAnalyticDevTeam/SimpleRock,rocknsm/SimpleRock,spartan782/rock,CyberAnalyticDevTeam/SimpleRock,rocknsm/rock,rocknsm/SimpleRock,CyberAnalyticDevTeam/SimpleRock