add jinchihe as approver

[jinchihe]

Provide some PRs before and be already a reviewer.
Add jinchihe as approver to better contribution. Thanks a lot!

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This change is 

[ryandawsonuk]

/lgtm
/approve

[k8s-ci-robot]

@ryandawsonuk: changing LGTM is restricted to assignees, and only kubeflow/example-seldon repo collaborators may be assigned issues.

In response to this:

/lgtm
/approve

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[ukclivecox]

/assign @ryandawsonuk

[k8s-ci-robot]

@cliveseldon: GitHub didn't allow me to assign the following users: ryandawsonuk.

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In response to this:

/assign @ryandawsonuk

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[jinchihe]

Seems that's caused by ryandawsonuk is not kubeflow members?

/assign @cliveseldon

[ukclivecox]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cliveseldon, ryandawsonuk

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Needs approval from an approver in each of these files:

• OWNERS [cliveseldon]

Approvers can indicate their approval by writing /approve in a comment
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