gnucash maint: Fix a typo in my previous commit

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash/commit/c6c46c46 (commit)
	from  https://github.com/Gnucash/gnucash/commit/55ddb1ad (commit)



commit c6c46c46f4fc795686b184f5e450b87d50db19f1
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Fri Jun 12 00:58:24 2020 +0200

    Fix a typo in my previous commit



Summary of changes:
 doc/tip_of_the_day.list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)