Uploader 'restic' is deprecated，the README is not update

[gavindev]

What steps did you take and what happened:
[A clear and concise description of what the bug is.]
Uploader 'restic' is deprecated, The README file is not update

when I excute this command, occur some error message.
velero install
--provider alibabacloud
--image registry.$REGION.aliyuncs.com/acs/velero:1.4.2-2b9dce65-aliyun
--bucket $BUCKET
--secret-file ./credentials-velero
--use-volume-snapshots=false
--backup-location-config region=$REGION
--use-restic
--plugins registry.$REGION.aliyuncs.com/acs/velero-plugin-alibabacloud:v1.0.0-2d33b89
--wait

An error occurred: unknown flag: --use-restic

I edit the command such as:
velero install
--provider alibabacloud
--image registry.$REGION.aliyuncs.com/acs/velero:1.4.2-2b9dce65-aliyun
--bucket $BUCKET
--secret-file ./credentials-velero
--use-volume-snapshots=false
--backup-location-config region=$REGION
--uploader-type=restic
--plugins registry.$REGION.aliyuncs.com/acs/velero-plugin-alibabacloud:v1.0.0-2d33b89
--wait

REF the help infomation：
--uploader-type string The type of uploader to transfer the data of pod volumes, the supported values are 'restic', 'kopia' (default "kopia")

occur those error message:
⚠️ Uploader 'restic' is deprecated, don't use it for new backups, otherwise the backups won't be available for restore when this functionality is removed in a future version of Velero

What did you expect to happen:
update the README file

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Velero version: (use ark version):
• Kubernetes version: (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):