refactor: replace info.json's repo with repoUrl

[dsherret]

#86 gave every info.json entry a repo (ex. g-plane/malva) to say where the plugin is published from. The served info.json already had a repoUrl for that, derived during the build, so each plugin ended up with both.

This drops repo and has info.json declare repoUrl instead, which the release lookup and the npm package map now read the GitHub owner and repo from:

{
  "name": "dprint_plugin_malva",
  "displayName": "g-plane/malva",
  "repoUrl": "https://github.com/g-plane/malva"
}

The served repoUrl values are unchanged; the only difference in the output is that repo is gone. Nothing reads it — the CLI doesn't and the homepage only had it in the search text, which repoUrl already covers.

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	dprint-plugins	8587467	Commit Preview URL Branch Preview URL	Oct 03 2026, 11:14 PM

[dsherret]

This was up for only a few minutes so not a big deal.