Clarify the meaning of Extended Support for supported versions
Clarify the meaning of Extended Support for supported versions

Signed-off-by: Gerhard Lazu <41377d93c07cc4cceaddb8b29dbec3b90b3c7191@lazu.co.uk>

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