Fix bracket in README

[arkie]

No description provided.

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[fhinkel]

Thanks!

[arkie]

I signed it!

[googlebot]

CLAs look good, thanks!

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[fhinkel]

Wonderful, thank you @arkie. I'll merge this as soon as the CI is finished.

[fhinkel]

Closed via #1429 because the branch for this PR got deleted.