DOC: fix the way utils are called

doc/Maintenance.rst

@@ -10,7 +10,7 @@ Creating a Backup
 You can use the Python script ``utils/backup.py`` to create a backup (SQL dump) 
 of the SQL-Backend::
 
-    utils/backup.py -d folder/where/the/backup/is/created
+    ./utils/backup.py -d folder/where/the/backup/is/created
 
 You can do this while CaosDB is online.
 
@@ -21,4 +21,4 @@ CaosDB should be offline for restoring.
 You can use the Bash script ``utils/make_db`` to restore a backup (SQL dump) 
 of the SQL-Backend::
 
-    make_db restore_db path/to/sql.dump
+    ./make_db restore_db path/to/sql.dump