Corrections to code examples

[larrythecucumber321]

This fixes the SwapToRatioStatus.success enum which should instead be SwapToRatioStatus.SUCCESS.

Also fixes the issue of the closing curly brace in the code sample, which was a parenthesis.

[vercel[bot]]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/uniswap/docs/7GLsCZkDQvEfFjLQWw3ZuNELYCNP
✅ Preview: https://docs-git-fork-larrythecucumber321-main-uniswap.vercel.app

[adjkant]

This was incorporated in #511 - thank you for your contribution!