Fix issues when code has `"""` but is not a docstring

[PhilipMay]

We had to apply this workaround:

https://github.com/telekom/style-doc/blob/db352ed72ae4473a805d485692df58ec4511a673/style_doc/style_doc.py#L495-L497

# fmt: off and # fmt: on is needed so black does not convert it back to '"""'.