Update polynomial_custom_function.py

Co-authored-by: Svetlana Karslioglu <[email protected]>

Author: harshaljanjani

beginner_source/examples_autograd/polynomial_custom_function.py

@@ -34,7 +34,7 @@ def forward(ctx, input):
         In the forward pass we receive a Tensor containing the input and return
         a Tensor containing the output. ctx is a context object that can be used
         to stash information for backward computation. You can cache tensors for
-        use in the backward pass using the ctx.save_for_backward method. Other
+        use in the backward pass using the ``ctx.save_for_backward`` method. Other
         objects can be stored directly as attributes on the ctx object, such as 
         ctx.my_object = my_object.
         """