Update cmorizer.py

Co-authored-by: Miguel <[email protected]>

src/pymorize/cmorizer.py

@@ -114,7 +114,7 @@ def __init__(
         ################################################################################
 
     def __del__(self):
-        # Gracefully close the cluster if it exists
+        """Gracefully close the cluster if it exists"""
         if self._cluster is not None:
             self._cluster.close()