Fix outdated comment

[japinli]

Commit 97b48c23f changes the log wait timeout from 1 second to 100 milliseconds but forgets to update the comment.

[github-actions[bot]]

2922 tests run: 2805 passed, 0 failed, 117 skipped (full report)

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Flaky tests (1)

#### Postgres 15 - `test_lr_with_slow_safekeeper`: [release](https://neon-github-public-dev.s3.amazonaws.com/reports/pr-8158/9664359232/index.html#suites/180444c850d4a41d41eb0a410dc16d84/37e85cda24a32ab8/retries)

Code coverage* (full report)

• functions: 32.5% (6873 of 21135 functions)
• lines: 50.2% (53654 of 106976 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
f081ec316c96fa98335efd15ef501745aa4f015d at 2024-06-25T15:13:51.669Z :recycle:}

[skyzh]

Needs control plane code owner review. Could @NanoBjorn please take a look? Thanks!