Update README.md

README.md

@@ -5,7 +5,7 @@ Documentation and [Schillix](https://www.berlios.de/software/schillix/) distribu
 This repository contains
 * ISO image used for the initial boot and installation of Schillix 0.8
 * tar archive of current state as of 2019-08 (Build 147)
-* [Installation Instructions](wikis/Installation/Overview)
+* [Installation Instructions](../wikis/Installation/Overview)
 
 ## Note
 During the course, Schillix is installed into [VMware](https://www.vmware.com) virtual machines (VM).