Update data_source_clusters.go (#1722)

Author: maastha

internal/service/cluster/data_source_clusters.go

@@ -375,7 +375,7 @@ func flattenClusters(ctx context.Context, d *schema.ResourceData, conn *matlas.C
 			"advanced_configuration":                  advancedcluster.FlattenProcessArgs(processArgs),
 			"auto_scaling_compute_enabled":            clusters[i].AutoScaling.Compute.Enabled,
 			"auto_scaling_compute_scale_down_enabled": clusters[i].AutoScaling.Compute.ScaleDownEnabled,
-			"auto_scaling_disk_gb_enabled":            clusters[i].BackupEnabled,
+			"auto_scaling_disk_gb_enabled":            clusters[i].AutoScaling.DiskGBEnabled,
 			"backup_enabled":                          clusters[i].BackupEnabled,
 			"provider_backup_enabled":                 clusters[i].ProviderBackupEnabled,
 			"cluster_type":                            clusters[i].ClusterType,