Fixed some urls in offline.yml file that wasn't yml formatted

[GmrezaH]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change

/kind bug

/kind cleanup /kind design /kind documentation /kind failing-test /kind feature /kind flake

What this PR does / why we need it: It fixes a bug in the inventory/sample/group_vars/all/offline.yml file Which issue(s) this PR fixes: Some urls in offline.yml file were not YAML formatted (they had "=" instead of ":")

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?: NONE

[k8s-ci-robot]

Hi @GmrezaH. Thanks for your PR.

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[yankay]

/ok-to-test

[yankay]

Thanks @GmrezaH /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: GmrezaH, yankay

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[ErikJiang]

Thanks @GmrezaH

/lgtm