gnucash-docs maint: Fix a typo in last commit

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/96300db7 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/96c10304 (commit)



commit 96300db7ab8973ca0c3208677922ac030b5436af
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Fri Feb 24 00:06:48 2023 +0100

    Fix a typo in last commit



Summary of changes:
 guide/ru/ch_invest.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)