[client] Fix black

Author: richard-julien

pycti/entities/opencti_grouping.py

@@ -396,7 +396,7 @@ def __init__(self, opencti):
         """
 
     @staticmethod
-    def generate_id(name, context, created = None):
+    def generate_id(name, context, created=None):
         name = name.lower().strip()
         context = context.lower().strip()
         if isinstance(created, datetime.datetime):