elm-format aggressively removes documentation double-spaces

I'd like, to achieve a quoting effect with new-line in a comment.
e.g.

```elm
{-|
> Blah.
> More.
-}
```

To achieve:

> Blah.
> More.

Instead, elm-format removes the double wire space so I'm left with:

> Blah. More.

Start by reproducing the issue with the Elm documentation comment shown in the report and inspect how elm-format handles spaces before a newline in documentation comments. Done means formatting preserves the double spaces so the generated text retains the intended quoted line break.

Written by the indexing model from the issue text.