Update inference_mode doc (pytorch#132321)

Fix pytorch#132288
Pull Request resolved: pytorch#132321
Approved by: https://github.com/awgu, https://github.com/soulitzer

torch/autograd/grad_mode.py

@@ -206,7 +206,7 @@ def clone(self) -> "set_grad_enabled":
 class inference_mode(_DecoratorContextManager):
     r"""Context-manager that enables or disables inference mode.
 
-    InferenceMode is a new context manager analogous to :class:`~no_grad`
+    InferenceMode is a context manager analogous to :class:`~no_grad`
     to be used when you are certain your operations will have no interactions
     with autograd (e.g., model training). Code run under this mode gets better
     performance by disabling view tracking and version counter bumps. Note that