Fix whitespace, add execution cmd message

- fixup whitespace globally
- dump executed command in notification area

lisp/tla+-mode.el

@@ -648,6 +648,7 @@ Note: The TLA+ specification file is a relative path.
          (output (shell-command-to-string cmd))
          (dot    (tla+-run-dot)))
     (save-excursion
+      (message (concat "Ran cmd: " cmd))
       (if tlcbuffer
           (progn
             (switch-to-buffer tlcbuffer)