Improve last change in autotype.texi

* doc/misc/autotype.texi (Autoinserting): Fix wording.  Suggested
by Richard Stallman <rms@gnu.org>.
2 jobs for emacs-28 in 4 minutes and 32 seconds (queued for 3 seconds)
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passed #48031
test-lisp-inotify

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passed #48032
test-lisp-net-inotify

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