added full logo path (check following issue https://gitlab.com/gitlab-org/gitlab-foss/-/issues/17276)

home.md

-![scholy.svg](img/scholy.svg "Scholy – A Linked Open Data Platform for Realising Directories of Scholars")
+![scholy.svg](https://cau-git.rz.uni-kiel.de/scholy/scholy-core/-/blob/master/web-app/images/scholy.svg "Scholy – A Linked Open Data Platform for Realising Directories of Scholars")
 
 Welcome to [Scholy](https://cau-git.rz.uni-kiel.de/scholy) documentation.