Update package repository URL and homepage metadata

[chenlinxi890-spec]

markdown-js PR draft

Microbounty lead: charles-openclaw/charles-microbounties#3401

Upstream repository: https://github.com/evilstreak/markdown-js

Suggested branch:

codex/update-package-metadata

Commit message:

Update package metadata URLs

PR title:

Update package repository URL and homepage metadata

PR body:

Updates package metadata only:

- Changes `repository.url` from deprecated `git://` transport to `git+https://`.
- Adds `homepage` pointing to the GitHub README.

This helps npm clients, registry tooling, and automated scanners resolve the public repository and project landing page without relying on legacy unauthenticated Git transport.

Validation:
- Parsed `package.json` locally with Python's JSON parser.
- Confirmed `repository.url` is `git+https://github.com/evilstreak/markdown-js.git`.
- Confirmed `homepage` is `https://github.com/evilstreak/markdown-js#readme`.

Notes:

• Metadata-only change.
• No runtime code, dependencies, API, or build behavior changed.
• No production testing, secrets, credentials, private data, scanning, or destructive action involved.
• Actual PR submission is still blocked by unavailable GitHub write tooling in this environment.

[chenlinxi890-spec]

Payout asset: USDC
Payout network: Base
Payout address: 0x9d4cc3466a2d81efb8b575e2af154ce81cae2a46

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