Intermittent CI failures

### Summary

It's been two times I've seen a linkcheck failure in the CI in the last days: https://github.com/rust-lang/rust-clippy/actions/runs/15099399426/job/42438346431

Restarting the job made it pass, but it seems to be flaky.

### Reproducer

_No response_

### Version

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### Additional Labels

@rustbot label +A-infra