Use the original wording, it was not typo.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 6f611bf31926441b78d8af0376bc99b010b74fc1..4c788b4de09581c70615fa4e7b8246a1ab6123ab 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -1591,7 +1591,7 @@ none,obsolete}.
 @end table
 
 If you want @command{autoreconf} to pass flags that are not listed here
-to @command{aclocal}, set @code{ACLOCAL_AMFLAGS} in your Makefile.am.
+on to @command{aclocal}, set @code{ACLOCAL_AMFLAGS} in your Makefile.am.
 
 @c ========================================= Initialization and Output Files.