docs(): updating query api input example to match expected
docs(): updating query api input example to match expected

Signed-off-by: Art Begolli <1dfb841f20ea5634af512a90869293338ba5cb08@bristol.ac.uk>

open-policy-agent/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,tsandall/opa