fix 1

Rishabh Bafna · Rishabh Bafna · commit d853353cff7c · 2025-10-24T15:52:19.000+05:30
diff --git a/maths/series/catalan_numbers.py b/maths/series/catalan_numbers.py
@@ -9,6 +9,7 @@
 """
 
 from __future__ import annotations
+
 import doctest
 
 
