fix typo

Author: meow464

kivy_ios/toolchain.py

@@ -1485,7 +1485,7 @@ def update(self):
             recipes.append(name)
 
         update_pbxproj(filename, pbx_frameworks=args.add_framework,
-                       custom_recipes=args.recipes, custom_recipes_paths=args.add_custom_recipe)
+                       custom_recipes=recipes, custom_recipes_paths=args.add_custom_recipe)
         print("--")
         print("Project {} updated".format(filename))