Start fixing forecast service API 5

services/notification/app/main.py

@@ -163,7 +163,7 @@ async def health_check():
 async def metrics():
     """Prometheus metrics endpoint"""
     if metrics_collector:
-        return metrics_collector.generate_latest()
+        return metrics_collector.get_metrics()
     return {"metrics": "not_available"}
 
 # Exception handlers