docs: format go snippet

[RomanMIzulin]

Description

Just format go snippet AND corrected a little bit to a be valid go code.

Type of change

• [ ] Documentation change (pure documentation change)

What's Changed

• [ ] go on failure code example

[vercel[bot]]

@RomanMIzulin is attempting to deploy a commit to the Hatchet Team on Vercel.

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[steebchen]

Thanks @RomanMIzulin!

Unfortunately the linter ha issues with that specific snippe, I have no idea why.. it keeps wrongly intending it though so we can't merge this unless we also fix the underlying linter issue