fix: explain account-or-zone scope and reject an empty --zone - #422

{ "workflowData": { "owner": "cloudflare", "repo": "cf", "sha": "d8a706f9bef32baff9ff93ef4ed740ca51b4d6c8", "ref": "422", "headBranch": null }, "key": "cPBZNwDk4y", "runId": 40421748105, "webhookDebug": { "action": "requested", "head_branch": "noah/account-or-zone-scope", "head_repository_full_name": "khoinguyenpham04/cf", "full_name": "cloudflare/cf", "isPullRequest": true, "prNumber": 422, "prNumberType": "number", "isNewPullRequest": true, "isOldPullRequest": false, "prKey": "khoinguyenpham04/cf:noah/account-or-zone-scope", "oldPrDataHash": "2yaI7Dr8ue", "lookupKey": "khoinguyenpham04/cf:noah/account-or-zone-scope", "data": { "owner": "cloudflare", "repo": "cf", "sha": "d8a706f9bef32baff9ff93ef4ed740ca51b4d6c8", "ref": "422", "headBranch": null } }, "currentCursor": { "sha": "d1f02e8a4c3dcb1a8f638e7eb4bd39aaf5eff6e6", "timestamp": 40355909560 }, "pkgPrNewVersion": "0.0.92" }