Typo this needs to be replace
@prathwishshetty 
I have raised a PR for this at https://github.com/NVIDIA/NeMo/pull/8498
Let's wait to get it merged soon. Thanks for raising PR This can be closed as PR gets merged Thank you for the quick PR!
https://github.com/NVIDIA/NeMo/blob/88e332d31a9ed54d5e19c5250e876eac18ad8936/tools/nemo_forced_aligner/utils/data_prep.py#L155