fix linter

Author: maltesander

tests/templates/kuttl/smoke/30_test-metrics.py

@@ -5,7 +5,7 @@
 response = requests.get(metrics_url)
 
 assert response.status_code == 200, "Metrics endpoint must return a 200 status code"
-assert "bundle_loaded_counter" in response.text, \
+assert "bundle_loaded_counter" in response.text, (
     f"Metric bundle_loaded_counter should exist in {metrics_url}"
-
+)
 print("Metrics test successful!")