Typo "Pytorch"→"PyTorch" (#569)

https://github.com/microsoft/onnxruntime-extensions/blob/main/tutorials/pytorch_custom_ops_tutorial.ipynb
#PingMSFTDocs

tutorials/pytorch_custom_ops_tutorial.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Convert And Inference Pytorch model with CustomOps\n",
+    "# Convert And Inference PyTorch model with CustomOps\n",
     "\n",
     "This notebook demonstrates how to use onnxruntime-extensions to run a PyTorch model that contains operators that are not part of the ONNX standard."
    ]
@@ -142,7 +142,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "* **Compare the result with Pytorch**"
+    "* **Compare the result with PyTorch**"
    ]
   },
   {