chore: update multiline parsing

- remove unnecessary `key`, `value` keys in params. Direct use of the value of the `value` key... (the actual parsing result)
- for each comments the params are converted to an array of params.
- fix wrong end of line in multi line descriptions.

### Breaking feature :

The transformation replace the content of the given file now.
The output file is expected to be **a pure JSON file**.
feat(demo): generating a markdown doc file form source comments
chore(release): v0.0.3