update bob_token and alice_token in markdown (#4504)
update bob_token and alice_token in markdown (#4504)

Signed-off-by: yongen.pan <31657a52efc3f2c937686005a524a00928439de6@daocloud.io>
open-policy-agent/opa,open-policy-agent/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa