Add patches for Notebooks (Model Primer, ASR)
are these fixes to 1.0.0b2? Why is this sent to main?

# Bugfixes
- NeMo Model Primer updated to use PTL 1.x api
- Fix WER calculation for ASR notebook
- Speech commands notebook update to use `-last.ckpt` instead of `-end.ckpt` as `-end.ckpt` no longer is created.

Edit: Colab updated some internal format, hence the large diff. No content has been changed.

Signed-off-by: smajumdar <titu1994@gmail.com>