Updated notebook to fix batch configuration and precision bugs
Signed-off-by: Virginia Adams <vadams@nvidia.com>

Bug fixes for prompt learning notebook after pipeline parallel addition 
https://nvbugs/3681543 [ML-NeMo][A30] Multitask_Prompt_and_PTuning.ipynb branch name not 'r1.10.0' and failed with ValueError if manually changed to the r1.10.0 branch

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**Collection**: BigNLP

# Changelog 
- Updated tutorial notebook

# Usage
Run Jupiter notebook

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**PR Type**:
- [ ] New Feature
- [x] Bugfix
- [ ] Documentation

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# Additional Information
* Related to # (issue)
