Update repl.md with latest REPL behaviour
Update repl.md with latest REPL behaviour

timothyhinrichs/opa,open-policy-agent/opa,Eva-xiaohui-luo/opa,tsandall/opa,timothyhinrichs/opa,Eva-xiaohui-luo/opa,tsandall/opa,tsandall/opa,timothyhinrichs/opa,timothyhinrichs/opa,open-policy-agent/opa,open-policy-agent/opa,Eva-xiaohui-luo/opa,tsandall/opa,timothyhinrichs/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa