Fix typo in top comment of catalog.py (#453)

Author: Demagalawrence

patterns/behavioral/catalog.py

@@ -1,8 +1,9 @@
 """
-A class that uses different static functions depending on a parameter passed in
-init. Note the use of a single dictionary instead of multiple conditions
+A class that uses different static functions depending on a parameter passed
+during initialization. Uses a single dictionary instead of multiple conditions.
 """
 
+
 __author__ = "Ibrahim Diop <[email protected]>"