The authors would like to correct the Declaration of Competing Interest section of the article. Original text: “The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.” Corrected text: “The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. J.U. and E.P. acknowledge the financial support from the Slovenian Research and Innovation Agency (ARIS) under research core funding No. P1-0055 and project (Gravitacija, GC-0003).” In addition, an updated version of the Supplementary Information has been added under the Supplementary data section online. The authors would like to apologise for any inconvenience caused.