Separate punctuation by whitespace
# What does this PR do ?

Fix separate_punctuation=True option 

**Collection**: ASR

# Changelog 
Do 
```
'some text.' -> 'some text .'
'some text .' -> some text .'
```

instead of 
```
'some text.' -> 'some text .'
'some text .' -> some text.'
```

**PR Type**:
- [V ] Bugfix


## Who can review?

@Kipok 
