Fix decoding

[fgsch]

Populate the structure correctly. Noticed by @cee-dub using the CLI.

Before:

fastly config-store list-services --store-id [REDACTED] --json
[
  {
    "ActiveVersion": null,
    "Comment": "",
    "CreatedAt": null,
    "CustomerID": null,
    "DeletedAt": null,
    "ServiceID": null,
    "Name": "[SOME NAME]",
    "Type": "wasm",
    "UpdatedAt": null,
    "Versions": null
  }
]

After:

[
  {
    "ActiveVersion": null,
    "Comment": "",
    "CreatedAt": "2023-02-27T15:57:35Z",
    "CustomerID": "[SOME CUSTOMER ID]",
    "DeletedAt": null,
    "ServiceID": "[SOME SERVICE ID]",
    "Name": "[SOME NAME]",
    "Type": "wasm",
    "UpdatedAt": "2023-02-27T15:57:35Z",
    "Versions": null
  }
]

[cee-dub]

Thanks! 🙏