DPROD — fix: invalid JSON in examples/data-rights/example.json

See https://github.com/EKGF/dprod/blame/a78e2f110d9ec729fbe6f74317db3b379cfade56/examples/data-rights/example.json#L5.

1. Example doesn't look like valid JSON.
2. Neither does "rightOperand": [region:EMEA, region:APAC] in the same file.

Note: Github issues #110

Correct json schema in data rights examples

In this page, https://github.com/EKGF/dprod/blame/a78e2f110d9ec729fbe6f74317db3b379cfade56/examples/data-rights/example.json#L5

fix the json schema line 5,
"assigner": 'https://schema.org/person/AdamSmith", and
in line 16,
"rightOperand": [region:EMEA, region:APAC],