Use RetrieveProcess instead of RetrieveDataImport

Erwan Rouchet
2022-09-28T14:26:05Z

Follow-up of backend#1304: the `RetrieveDataImport` endpoint is renamed `RetrieveProcess`, which affects all commands under `arkindex process`.

Follow-up of backend#1304 (closed): the RetrieveDataImport endpoint is renamed RetrieveProcess, which affects all commands under arkindex process.