I've tried to use the tool "IABot" (https://tools.wmflabs.org/iabot/) to correct the external link http://www.artisanfilms.ch/3842870/bernard-weber in that article. After it didn't work, I tried to edit the URL data, but it didn't work because the bot has never read this URL. Is this because the bot has to mouch jobs queued?
IABot only edits links in references. The link you tried to have fixed is part of the main article text.
I guess the bot will eventually learn about all URLs, both in references and in the article text, but it will take some time.