Match up expected import identifier errors with actual format

[rjkip]

(Thank you for providing this provider ❤️)

Took going to the source code to figure out the import ID for my environment variable should be colon-separated team_id:site_id:key not comma-separated team_id,site_id,key 😭

$ terraform import -var-file=.stg.tfvars -var-file=.stg.secrets.tfvars netlify_environment_variable.consultants redacted,redacted,REDACTED

data.netlify_team.team: Reading...
data.netlify_site.site: Reading...
data.netlify_site.site: Read complete after 0s [id=redacted]
netlify_environment_variable.consultants: Importing from ID "redacted,redacted,REDACTED"...
data.netlify_team.team: Read complete after 0s [id=redacted]
╷
│ Error: Unexpected Import Identifier
│
│ Expected import identifier with one of these formats: team_id,key or team_id,site_id,key. Got:
│ "redacted,redacted,REDACTED"