Update garbage-collection.md

[grasbergerm]

It seems the default is actually two minutes, https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/#:~:text=%2D%2Dminimum%2Dimage%2Dttl%2Dduration%20duration%C2%A0%C2%A0%C2%A0%C2%A0%C2%A0Default%3A%202m0s

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[kundan2707]

Correct as per kubelet documentations
/lgtm

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LGTM label has been added.

Git tree hash: ab49a052dc0f165b9b8ca956736d9146f87022ce

[divya-mohan0209]

Hello @grasbergerm , thank you for this fix!
This is technically accurate per the Kubelet reference docs

/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: divya-mohan0209

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