[Doc] Fix wrong code example in `chain` function page

[fResult]

Description

Please provide a detailed description of the changes and the intent behind them :)

Checklist

• [x] Changes are covered by tests if behavior has been changed or added
• [x] Tests have 100% coverage
• [x] If code changes were made, the version in package.json has been bumped (matching semver)
• [x] If code changes were made, the yarn build command has been run and to update the cdn directory
• [x] If code changes were made, the documentation (in the /docs directory) has been updated

Resolves

If the PR resolves an open issue tag it here. For example, Resolves #34

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Name	Status	Preview	Comments	Updated (UTC)
radash-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 11, 2024 5:33pm