Fix build not pushing to proper path with `static` assets

[tomvothecoder]

Fix incorrect reference to static assets (uses repo name)

• https://create-react-app.dev/docs/deployment/#github-pages
• https://stackoverflow.com/questions/59271816/react-build-with-gh-pages-generates-wrong-file-path-to-static-files
• https://docs.github.com/en/pages/configuring-a-custom-domain-for-your-github-pages-site/about-custom-domains-and-github-pages
• https://stackoverflow.com/questions/66519189/i-am-trying-to-deploying-my-static-react-app-on-github-pages-but-im-getting-whi

Fix 404 client-side routing

• https://stackoverflow.com/questions/46056414/getting-404-for-links-with-create-react-app-deployed-to-github-pages
• https://stackoverflow.com/questions/57883297/deploying-reactjs-website-on-github-pages-with-routing-results-in-404-error-on-r
• https://github.com/rafgraph/spa-github-pages