Update broker build instructions after the switch to erlang.mk
Update broker build instructions after the switch to erlang.mk

rabbitmq/rabbitmq-website,gotthardp/rabbitmq-website,rabbitmq/rabbitmq-website,rabbitmq/rabbitmq-website,rabbitmq/rabbitmq-website,gotthardp/rabbitmq-website,gotthardp/rabbitmq-website,gotthardp/rabbitmq-website,gotthardp/rabbitmq-website,gotthardp/rabbitmq-website,rabbitmq/rabbitmq-website