fix for do_backup()

README.md

@@ -20,11 +20,9 @@ daily/nathan/backup.1            20GB/ 0:40h
       hamiller/backup.1          35GB/ 0:35h
                ...
                backup.7
-      synology/backup.1/data   \
-                        nfs    / 60GB/ 1:40h
+      synology/backup.1          60GB/ 1:40h
                ...
-               backup.7/data
-               backup.7/nfs
+               backup.7
 weekly/synology                 320GB/ 9:30h
 logs/<hostname>/
 ```