Update Calico to lowercase and fix broken calico link in README

[Xieql]

What type of PR is this?

/kind bug
/kind documentation

What this PR does / why we need it:

1 update ”Calico“ to lowercase so that it can maintain consistency in capitalization with other Network Plugins names in parallel.

2 update calico link in README

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Update Calico to lowercase and fix broken calico link in README

[k8s-ci-robot]

Hi @Xieql. 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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[mzaian]

Thanks @Xieql
/ok-to-test

[MrFreezeex]

Hi @Xieql, thanks for the contribution! Could you rebase your commit, the CI failure seems weird 🤔

[Xieql]

Okay, I noticed the error, but I wasn't sure why it occurred or how to handle it.

So, I performed ‘ git fetch --all ; git rebase upstream/master ’ and resubmitted the changes.

but still failed ...

[mzaian]

Okay, I noticed the error, but I wasn't sure why it occurred or how to handle it.

So, I performed ‘ git fetch --all ; git rebase upstream/master ’ and resubmitted the changes.

but still failed ...

I the CI failures are not related to the rebasing. all good now let's wait and see.

[MrFreezeex]

Well actually I think that now that calico is lowercased the script to check if the versions in the readme are up to date is failing :(

[Xieql]

Well actually I think that now that calico is lowercased the script to check if the versions in the readme are up to date is failing :(

Okay, I tried not to modify it to test your idea. However, I still think it looks strange to have "calico" in uppercase when all the other words are in lowercase.

[Xieql]

still failed :(

[floryut]

still failed :(

That was a random one, I've restarted and this is now fixed

[MrFreezeex]

Thanks for your contribution, there is two other pipelines that are running so there may be some other "random CI failiures" but we should get there bear with us 🙏 :D.
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MrFreezeex, mzaian, Xieql

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[Xieql]

I see. In that case, I will change "calico" back to lowercase. XD

[MrFreezeex]

No but the lowercase calico definitely doesn't work with the script tests/scripts/check_readme_versions.sh :/, if you are willing to do so as well you might try to fix the script but it will be a bit more involved probably :(

[MrFreezeex]

/lgtm