cann: update the CANN.md

Author: shibizhao

docs/backend/CANN.md

@@ -266,7 +266,7 @@ Since the aclnn interface for flash attention cannot support the logit softcap,
 
 Authors from Peking University: Bizhao Shi ([email protected]), Yuxin Yang ([email protected]), Ruiyang Ma ([email protected]), and Guojie Luo ([email protected]).
 
-Thanks Tuo Dai and Shanni Li from Huawei Technologies Co., Ltd.
+We would like to thank Tuo Dai, Shanni Li, and all of the project maintainers from Huawei Technologies Co., Ltd for their help during the code development and pull request.
 
 ## TODO
 - Support more models and data types.