How to update DNS records? Receiving "Data needs to end with a dot (.)"

**Describe the Issue:**

See: https://www.digitalocean.com/community/questions/how-to-update-dns-records-receiving-data-needs-to-end-with-a-dot

The issue is in the API but is surfaced through `doctl` too:

```bash
doctl compute domain records update ${DOMAIN} \
--record-id ${ID} \
--record-ttl 43200

Error: PUT https://api.digitalocean.com/v2/domains/.../records/...: 422 Data needs to end with a dot (.)
```

The workaround works when applied to `doctl` too (adding `--record-data`):

```bash
doctl compute domain records update ${DOMAIN} \
--record-id ${ID} \
--record-ttl 43200 \
--record-data "${DATA}."
```