fix for pep

Author: Greg Svitak

graphene_sqlalchemy/converter.py

@@ -102,7 +102,7 @@ def convert_column_to_int_or_id(type, column, registry=None):
         return ID(description=column.doc, required=not(column.nullable))
     else:
         return Int(description=getattr(column, 'doc', None),
-                  required=not(getattr(column, 'nullable', True)))
+                   required=not(getattr(column, 'nullable', True)))
 
 
 @convert_sqlalchemy_type.register(types.Boolean)