chore(mge): typo and reword

GitOrigin-RevId: 3848da4824

imperative/python/megengine/core/tensor/multipledispatch/__init__.py

@@ -46,7 +46,8 @@
 # Commit: 9e3c87d0cee57972fd5cc33fe5cacde77c781834
 # Authors: Matthew Rocklin et al.
 #
-# Refer to ACKNOWLEDGEMENT for copyright and liscense information
+# The original LICENSE file is included in the ACKNOWLEDGEMENT file under
+# MegEngine root directory.
 
 from .core import dispatch
 from .dispatcher import Dispatcher