 hardLineBreak issue, the white spaces before `\` hard line break should be removed

The double white space hard line break has the right output:
```markdown
a     
b
```

The `\` hard line break has a wrong output, there is a white space after `a`:
```markdown
a \
b
```


Screenshot:

![Screenshot 2022-10-18 at 20 56 00](https://user-images.githubusercontent.com/5637609/196519630-a0233679-f73d-4c91-a06b-fc6b24379105.png)