docs: Fix integration policy (#4185)
docs: Fix integration policy (#4185)

`some id` left after policy cleanup caused the Rego
compiler to rightfully protest when I tried integrating
OPA as a library today.

Signed-off-by: Anders Eknert <dfdb7392591db597bc41cf266a9c3bc12a2706e5@eknert.com>
open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa,open-policy-agent/opa,open-policy-agent/opa,tsandall/opa,open-policy-agent/opa,tsandall/opa,tsandall/opa