📖 Fix wrong XDG autostart documentation in README (#4)

Author: kiview

README.md

@@ -15,7 +15,7 @@ Will start the program and connect as soon as the Yubikey is inserted (and not a
 ### Autostart via XDG autostart (KDE, Gnome, LXDE)
 
 * Copy yubi-oath-vpn binary to $HOMR/Apps/yubi-oath-vpn, make sure it's executable
-* Adjust and copy the file yubi-oath-vpn.service to $HOME/.config/systemd/user/yubi-oath-vpn.service
+* Adjust and copy the file yubi-oath-vpn.desktop to $HOME/.config/autostart/yubi-oath-vpn.desktop
 
 ## Limitations
  * The Yubikey must have a password