Handle author dict Bug

[addie9800]

When crawling Braunschweiger Zeitung I have encountered a rather odd bug. Take this article for example: https://www.braunschweiger-zeitung.de/article238597927/Von-Natur-aus-Harzer-Honig-aus-Willensen-ist-Typisch-Harz.html with the author element of its ld_json

"author":[{"@type":"Organization","name":"FUNKE Mediengruppe","url":"https://www.harzkurier.de/autoren"}]

The previous code would throw an attribute error, that str does not have an attribute get. Going through the ld element, I could see that the author element is of type dict. After some more searching, I found that in the HTML Fundus receives, we have this:

"author":{"@type": "Person","name": "hn","url": "https://www.braunschweiger-zeitung.de/autoren/"}

I am not entirely sure, why this is happening, my guess is that it's some kind of redirection issue. Nevertheless, this PR fixes it.

[MaxDall]

@addie9800 I have to admit this sounds strange. I would feel more comfortable if we understood what was happening before fixing it. Further, I cannot reproduce this bug on the current master branch. Can you confirm this?

Edit:
Additionally I think generic_author_parsing should cover both cases.