Update app.py

app.py

@@ -170,7 +170,7 @@ TRAINING_FORMATS = {
         "engagement": "High",
         "scalability": "High",
         "interaction": "Low",
-        "sample_link": "https://youtu.be/HPUWGE9B_UQ?si=a4vr6BL43eMCR9Th",
+        "sample_link": "https://elearningindustry.com/what-is-video-based-learning",
         "roi_metrics": "85% knowledge retention, 60% faster skill acquisition"
     },
     "powerpoint_presentations": {