update GPU description

docs/TVM_EP.md

@@ -23,7 +23,9 @@ apt-get install -y python3 python3-dev python3-pip python3-setuptools gcc libtin
 pip3 install numpy decorator attrs
 ```
 
-Also, the current implementation has `GPU` support for TVM EP. For now, you can use an `NVidia GPU` with CUDA Toolkit support. To do this, make sure you have installed the NVidia driver and CUDA Toolkit. More detailed instructions can be found on the [official page](https://developer.nvidia.com/cuda-toolkit).
+Also, the current implementation has `NVidia GPU` support for TVM EP. For now, you can use only `NVidia GPU` with CUDA Toolkit support.
+To do this, make sure you have installed the NVidia driver and CUDA Toolkit.
+More detailed instructions can be found on the [official page](https://developer.nvidia.com/cuda-toolkit).
 
 Clone this repo.
 In order to build ONNXRT you will need to have CMake 3.18 or higher. In Ubuntu 20.04 you can use the following commands to install the latest version of CMake: