src/vs/workbench/contrib/welcomeGettingStarted/browser/gettingStartedDetailsRenderer.ts/transformUris
const transformUris = (content: string, base: URI): string => content
	.replace(/src="([^"]*)"/g, (_, src: string) => {
		if (src.startsWith('https://')) { return `src="${src}"`; }
		return `src="${transformUri(src, base)}"`;
	})
	.replace(/!\[([^\]]*)\]\(([^)]*)\)/g, (_, title: string, src: string) => {
		if (src.startsWith('https://')) { return `![${title}](${src})`; }
		return `![${title}](${transformUri(src, base)})`;
	});