[codex] normalize funding project name

[Sean-Kenneth-Doherty]

Summary

• normalize the project name in public/funding.json from First contributions to First Contributions

Why

This keeps the public funding metadata aligned with the site title, manifest name, Open Graph metadata, and README casing.

Validation

• parsed public/funding.json with Node and confirmed the first-contributions project name is First Contributions
• GITHUB_TOKEN=$(gh auth token) pnpm build
• parsed generated dist/funding.json and confirmed the built project name is also First Contributions

[Sean-Kenneth-Doherty]

Validation pass for this branch:

• Confirmed the only source change is public/funding.json.
• Parsed public/funding.json with Node and confirmed the first-contributions project name is First Contributions.
• Ran GITHUB_TOKEN=... pnpm build; Astro built both routes successfully.
• Parsed generated dist/funding.json and confirmed the built project name is also First Contributions.