simplified help output (wrong command)

pman.sh

@@ -117,7 +117,7 @@ case "$command_args" in
     ;;
   *)
     if [ "$more_arguments" = "true" ]; then
-      echo "Invalid command: \"$command $command_args\""
+      echo "Invalid command: \"$command_args\""
       echo
       echo "Usage: pman <command> [args...]"
       echo "Available commands:"