update comments in dist files

jobs/backup.job.dist

@@ -12,7 +12,6 @@
 
 lang = en_us
 
-
 # ----------------------------------------------------------------------
 # local dumps; each service has its own subdir there
 # this entry is mapped to BACKUP_TARGETDIR in "localdump.sh"

jobs/dirs.job.dist

 # ----------------------------------------------------------------------
 #
 # jobfile for directories:
-# - where to put local dumps
 # - which directories you want to backup
+# - what to exclude
 #
 # ----------------------------------------------------------------------
 #