docs: add diagram to reference

[gonmmarques]

Relates to kubeflow/katib#2442

I was a bit unsure on how the doc should look like and if this is correct, please let me know if I missed something.

[google-oss-prow]

Hi @gonmmarques. 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.

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[Arhell]

/ok-to-test

[andreyvelich]

Thank you for doing this @gonmmarques!
Please fix the CI checks.

[gonmmarques]

Thank you for doing this @gonmmarques! Please fix the CI checks.

@andreyvelich Thank you for the review and the heads-up :) Let me know if I missed something else.

In the spirit of Hacktoberfest, and if this PR is accepted, please consider adding the label "hacktoberfest-accepted”. Thanks.

[andreyvelich]

Thanks for the updates @gonmmarques!
/lgtm
/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andreyvelich

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[gonmmarques]

Thanks for the updates @gonmmarques! /lgtm /approve

@andreyvelich You are welcome and sorry for missing some of the review comments. Can you correct the label to hacktoberfest-accepted?

[andreyvelich]

@gonmmarques We don't have such label in the website, and I don't think we participate in hacktoberfest this year, isn't ?

[gonmmarques]

Hacktoberfest is indeed opt-in for maintainers. To participate, either the repository needs to have the hacktoberfest topic or the PR needs to have the hacktoberfest-accepted .

Since I saw you added the label hacktoberfest on the PR I thought you were wanting to accept into the hacktoberfest.

Thanks anyways.