Update --test-repo flag description

[jonas-be]

Fix #206

[linux-foundation-easycla[bot]]

• :white_check_mark:login: jonas-be / (ac069d1bf8c1e93b732c94d3320117d9bc5a75c1)

The committers listed above are authorized under a signed CLA.

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[k8s-ci-robot]

Hi @jonas-be. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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.

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[rjsadow]

/ok-to-test /lgtm /approve Thanks for this @jonas-be !!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jonas-be, rjsadow

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/hydrophone/blob/main/OWNERS)~~ [rjsadow] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment