fix: try fix errors (#71)

## Description

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relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #71
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Co-committed-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

stackit/internal/wait/sqlserverflexbeta/wait.go

@@ -161,8 +161,10 @@ func CreateInstanceWaitHandler(
 					return false, nil, nil
 				}
 				return true, s, nil
-			case strings.ToLower(InstanceStateUnknown), strings.ToLower(InstanceStateFailed):
-				return true, nil, fmt.Errorf("create failed for instance with id %s", instanceId)
+			case strings.ToLower(InstanceStateUnknown):
+				return true, nil, fmt.Errorf("create failed for instance %s with status %s", instanceId, InstanceStateUnknown)
+			case strings.ToLower(InstanceStateFailed):
+				return true, nil, fmt.Errorf("create failed for instance %s with status %s", instanceId, InstanceStateFailed)
 			case strings.ToLower(InstanceStatePending), strings.ToLower(InstanceStateProcessing):
 				tflog.Info(
 					ctx, "request is being handled", map[string]interface{}{