Adds WeightedRandomPicker plugin description

[learner0810]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Adds WeightedRandomPicker plugin description

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

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[k8s-ci-robot]

Hi @learner0810. 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[nirrozenbaum]

/ok-to-test
/lgtm
/approve

Thanks @learner0810! 🙏🏼

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: learner0810, nirrozenbaum

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• OWNERS [nirrozenbaum]

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[learner0810]

/retest-required

[nirrozenbaum]

seems like an issue in CI.
I tried to fix, checking if the fix works:

/retest