Fix sprite destroy syntax to require -s flag

[kcmartin]

Summary

• Fixed documentation inconsistency where sprite destroy my-sprite was used instead of the correct sprite destroy -s my-sprite syntax
• Updated quickstart.mdx, sprites.mdx, working-with-sprites.mdx, and cli-runner.ts script
• The CLI reference documents sprite destroy [options] without a positional argument, so the -s flag is required

Test plan

• Verify the updated examples match the CLI reference documentation
• Test that sprite destroy -s sprite-name works correctly with the CLI

🤖 Generated with Claude Code

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CLI Documentation Generator

Metric	Value
CLI Version	0.0.1
Commands Generated	24
Tests	✅ 0/0 passed

📚 Commands documented

• sprite login
• sprite logout
• sprite org auth
• sprite org list
• sprite org logout
• sprite org keyring disable
• sprite org keyring enable
• sprite auth setup
• sprite create
• sprite use
• sprite list
• sprite destroy
• sprite exec
• sprite console
• sprite checkpoint create
• sprite checkpoint list
• sprite checkpoint info
• sprite checkpoint delete
• sprite restore
• sprite proxy
• sprite url
• sprite url update
• sprite api
• sprite upgrade

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Preview Deployment

Name	URL
Preview	https://pr-99-superfly-sprites-docs.fly.dev

Commit: 7818537

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E2E Test Results

✅ Tests success

Ran against: https://pr-99-superfly-sprites-docs.fly.dev

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Lighthouse Results

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