[ci/lint] Fix linkcheck flakiness (#23482)
[ci/lint] Fix linkcheck flakiness (#23482)

As seen in https://buildkite.com/ray-project/ray-builders-branch/builds/6736#de2e23c9-3ec1-4c1b-83cb-41ae658ef1f8
ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray