Update beginner_source/onnx/onnx_registry_tutorial.py

Co-authored-by: Svetlana Karslioglu <svekars@meta.com>

Author: titaiwangms

beginner_source/onnx/onnx_registry_tutorial.py

@@ -78,9 +78,9 @@
 
 
 ######################################################################
-# In this example, we will assume that aten::add.Tensor is not supported by the ONNX registry,
+# In this example, we will assume that ``aten::add.Tensor`` is not supported by the ONNX registry,
 # and we will demonstrate how to support it. The ONNX registry allows user overrides for operator
-# registration. In this case, we will override the registration of aten::add.Tensor with our
+# registration. In this case, we will override the registration of ``aten::add.Tensor`` with our
 # implementation and verify it. However, this unsupported operator should return False when
 # checked with :meth:`onnx_registry.is_registered_op`.
 #