NFA: replace ellipses in text with 3 periods
# What does this PR do ?
Currently NFA breaks if there is a 'horizontal ellipses' character (`…`) in the text - specifically the 'restore punctuation' code breaks because it doesn't reconcile the single ellipses character with the 3 periods generated by the tokenizer. A quick for this is to just replace the ellipses with the 3 periods when we read the data (because the text will always end up being 3 periods even if we don't try to restore the punctuation.

**Collection**: `tools/nemo_forced_aligner/`

# Changelog 
- add a line which replaces horizontal ellipses character with 3 periods when reading the text in the original manifest.

# Usage
No usage change

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

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# Additional Information
* Related to # (issue)
