makeinfo build failure on 5c55fb1f

[Bob Proulx]

A minor problem caused in commit 5c55fb1f.

  autoconf.texi:15401: @kbd expected braces.
  autoconf.texi:15401: Misplaced {.
  autoconf.texi:15401: Misplaced }.
  autoconf.texi:15403: @kbd expected braces.
  autoconf.texi:15403: Misplaced {.
  autoconf.texi:15403: Misplaced }.
  autoconf.texi:15403: @kbd missing close brace.
  autoconf.texi:15401: @kbd missing close brace.
  makeinfo: Removing output file `autoconf.info' due to errors; use --force to 
preserve.
  make[1]: *** [autoconf.info] Error 1

A minor fix! :-)

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 991a714..dc8b900 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -15398,9 +15398,9 @@ an empty regular expression; the workaround is repeating
 expression.
 
 @example
address@hidden {echo abc | busybox sed '/a\(b\)c/ s//\1/'}
+echo abc | busybox sed '/a\(b\)c/ s//\1/'
 sed: No previous regexp.
address@hidden {echo abc | busybox sed '/a\(b\)c/ s/a\(b\)c/\1/'}
+echo abc | busybox sed '/a\(b\)c/ s/a\(b\)c/\1/'
 b
 @end example