add hint on restic mount

plugins/transfer/restic.sh

@@ -251,9 +251,11 @@
     }
 
     # Mount backup data
+    # see "restic help mount"
     function t_restoreDoMountBackupdata(){
         local _cmd=
-        echo HINT: This feature requires fuse. It works with root on UNIX/ LINUX platforms - not on MS Windows.
+        echo "HINT: This feature requires fuse. It works with root on UNIX/ LINUX platforms - not on MS Windows."
+        echo "      It can mount a single directory and shows all snapshots (not only [$RESTORE_ITEM])."
         echo
         if [ -z "$RESTIC_MOUNTPOINT" ]; then
             color error