modifiy copyright header

modelscope/models/multi_modal/dpm_solver_pytorch.py

@@ -1,6 +1,8 @@
 # The implementation is borrowed and modified from dpm-solver,
 # publicly avaialbe at https://github.com/LuChengTHU/dpm-solver.
-# Copyright 2021-2022 The Alibaba Fundamental Vision Team Authors. All rights reserved.
+# Copyright LuChengTHU Authors.
+# Copyright 2021-2022 The Alibaba Fundamental Vision Team Authors.
+# All rights reserved.
 import math
 
 import torch