add cuda support to test section and fix pipeline path

[MYusufY]

Hi! First of all, thanks a lot for the tutorial! :)

However, there were 2 issues i found.

1) my-qwen

Normally, the notebook was using my_qwen path for new model everywhere, but it seems its my-qwen on pipeline section, for notebook and README.

2) CUDA support for testing section

This simply solves:

• Last step doesn't use GPU #2
  And so makes us able to test our model with CUDA :)

Have a nice day!