chore: update [trpc].ts

[eltociear]

PR Checklist

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• [ ] Tests for the changes have been added (for bug fixes / features)

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What kind of change does this PR introduce?

• [ ] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [x] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] infrastructure changes
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What is the current behavior?

What is the new behavior?

Other information

arbitary -> arbitrary

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Latest commit: 728c2c11cb2035324506b7505b5ab0752a9f8cb1

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[ryansolid]

thanks