Add link to n8n automation project card

Add a URL to the existing "KI-Automation mit n8n" project card in the projects section.

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Replit-Helium-Checkpoint-Created: true

artifacts/joachim-portfolio/src/components/projects.tsx

@@ -26,6 +26,7 @@ const projects = [
     title: "KI-Automation mit n8n",
     desc: "Automatisierte Bildgenerierung, Lead-Prozesse, KI-gestützte Bildprüfung und API/Webhook-Workflows für echte Geschäftsprozesse.",
     tags: ["n8n", "OpenAI", "Webhooks", "Automation"],
+    url: "https://n8n.io/creators/jhummel/",
     type: "KI-Projekt",
   },
   {