gnucash-docs maint: Fix tiny missing-letter typo

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/933ebcde (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/25cef323 (commit)



commit 933ebcde3d8a73987c82738e0976f471d65a0063
Author: Benjamin Melançon <ben at agaric.com>
Date:   Fri Jul 4 18:56:01 2014 -0400

    Fix tiny missing-letter typo



Summary of changes:
 guide/C/ch_txns.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)