Update docs to include support for uploading .zip and .tar.gz pipeline files

[milosjava]

Update docs to include info that it is possible to upload .zip and .tar.gz pipeline files as well

Resolves: https://github.com/kubeflow/website/issues/3715

[google-oss-prow[bot]]

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[google-oss-prow[bot]]

Hi @milosjava. 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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[hbelmiro]

@milosjava can you please add the following to the PR's description in order to GitHub link it to the issue?

Resolves: https://github.com/kubeflow/website/issues/3715

[milosjava]

@hbelmiro updated