chore: modify example to do a donut purchase contract call

[tomiir]

Description

Modifies 7677 example to purchase a donut

Type of change

• Chore (non-breaking change that addresses non-functional tasks, maintenance, or code quality improvements)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• Code in this PR is covered by automated tests (Unit tests, E2E tests)
• My changes generate no new warnings
• I have reviewed my own code
• I have filled out all required sections
• I have tested my changes on the preview link
• [] Approver of this PR confirms that the changes are tested on the preview link

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
appkit-laboratory	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2024 2:10pm
appkit-vue-solana	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2024 2:10pm
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vue-wagmi-example	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 14, 2024 2:10pm
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[github-actions]

Coverage Report for Coverage

Status	Category	Percentage	Covered / Total
🔵	Lines	321.08%	4388 / 19659
🔵	Statements	321.08%	4388 / 19659
🔵	Functions	363.4200000000001%	372 / 1134
🔵	Branches	469.39%	694 / 1400

File Coverage

No changed files found.

Generated in workflow #7357 for commit 2918c14 by the Vitest Coverage Report Action