Fix exclude rule for backup folder and backup logs

Before every file in the tree containing backup was excluded

seqs/backup.cfg.example

@@ -10,8 +10,9 @@
 
 BACKUP_TARGET="/backup"
 # Exclude notation "directory/*" creates the directory but NOT its content
+# Leading slash binds the rule to the "root" of the transfer operation
 BACKUP_EXCLUDES=(\
- "backup*"\
+ "/backup*"\
  "/home/network/*"\
  "/dev/*"\
  "/proc/*"\