add antfin into list of adoptors

[sperlingxx]

Add antfin into list of adoptors.

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This change is 

[k8s-ci-robot]

Hi @sperlingxx. Thanks for your PR.

I'm waiting for a kubeflow member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[gaocegege]

/lgtm
/approve

Thanks for your contribution! 🎉 👍

cc @johnugeorge

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gaocegege

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[gaocegege]

/ok-to-test

[gaocegege]

@sperlingxx Thanks, and if you are interested in continuing to contribute in kubeflow community, suggest joining the kubeflow organization. Here is the documentation about the process: https://www.kubeflow.org/docs/about/contributing/#joining-the-kubeflow-github-org

• Send a PR adding yourself as a member in org.yaml
  
• After the PR is merged an admin will send you an invitation
  • This is a manual process that’s generally run a couple times a week
  • If a week passes without receiving an invitation reach out on kubeflow#community

There are already some members from Ant Financial, you can just add your name in https://github.com/kubeflow/internal-acls/blob/master/github-orgs/kubeflow/org.yaml#L243 and https://github.com/kubeflow/internal-acls/blob/master/github-orgs/kubeflow/org.yaml#L23