os: fix typo in test

[testwill]

No description provided.

[gopherbot]

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[gopherbot]

Message from Rob Pike:

Patch Set 1: Code-Review+2

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Message from Emmanuel Odeke:

Patch Set 1: Auto-Submit+1 Code-Review+2 Commit-Queue+1 Run-TryBot+1

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Message from Go LUCI:

Patch Set 1:

Dry run: CV is trying the patch.

Bot data: {"action":"start","triggered_at":"2024-03-24T23:25:57Z","revision":"0281876b683df2f4246c5f495c61fefd190790dc"}

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Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Message from Gopher Robot:

Patch Set 1: TryBot-Result+1

(1 comment)

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Message from Emmanuel Odeke:

Patch Set 1: -Commit-Queue

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Message from Go LUCI:

Patch Set 1:

This CL has passed the run

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Message from Go LUCI:

Patch Set 1: LUCI-TryBot-Result+1

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Message from David Chase:

Patch Set 1: Code-Review+1

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[gopherbot]

This PR is being closed because golang.org/cl/574016 has been merged.