Correction of error in the Tutorial's Point Cloud Classification Colab Notebook

[hdsfade]

📚 Describe the documentation issue

Colab Notebook link: https://colab.research.google.com/drive/1D45E5bUK3gQ40YpZo65ozs7hg5l-eo_U?usp=sharing

The problem is shown in the figure:

Fix: data.face.t() should be face.t()

Thank you very much for your attention to this issue and for considering the necessary correction.

Suggest a potential alternative/fix

Fix: data.face.t() should be face.t()

[rusty1s]

Thanks for spotting. Fixed it.