Fix HAOS compatibility and update documentation

root/etc/s6-overlay/s6-rc.d/init-foldingathome-config/run

@@ -1,6 +1,6 @@
 #!/usr/bin/with-contenv bash
 # shellcheck shell=bash
 
-# permissions on config root and folders
-lsiown -R abc:abc \
-    /config
+echo "**** setting up config directory ****"
+mkdir -p /config
+chmod 755 /config