gnucash maint: Fix a mistyped error message in configure.ac

[Frank H. Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash/commit/cf26b5c8 (commit)
	from  https://github.com/Gnucash/gnucash/commit/9a0d2a2e (commit)



commit cf26b5c86bfad0de78c8a5aae1b8fd7817f307aa
Author: fell <f.ellenberger at online.de>
Date:   Sun Jan 17 21:39:54 2016 +0100

    Fix a mistyped error message in configure.ac



Summary of changes:
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)