change port default to 80

Author: prassanna-ravishankar

src/agentex/lib/cli/templates/temporal/manifest.yaml.j2

@@ -91,7 +91,7 @@ agent:
 
     # Optional: Health check port for temporal worker
     # Defaults to 80 if not specified
-    # health_check_port: 8080
+    # health_check_port: 80
 
   # Optional: Credentials mapping
   # Maps Kubernetes secrets to environment variables