In the original article, we neglected to include the funder German Research Foundation/DFG and the Chemnitz University of Technology, who accepted to fund our publication. Therefore, the following statement should be added to our article: "The publication costs of this article were funded by the German Research Foundation/DFG and the Chemnitz University of Technology in the funding program Open Access Publishing." The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way.