Fix bad builtin name globs_match in docs.
Fix bad builtin name globs_match in docs.

Builtin name is regex.globs_match, and not globs_match.

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