gnucash maint: Improve comments how to update FQ sources

Thu Mar 15 13:09:12 EDT 2018

Updated	 via  https://github.com/Gnucash/gnucash/commit/0c8c94ea (commit)
	from  https://github.com/Gnucash/gnucash/commit/232dcb5c (commit)


commit 0c8c94eab024984132fe78a5ea025f5af349127c
Author: fell <frank.h.ellenberger at gmail.com>
Date:   Thu Mar 15 18:09:08 2018 +0100

    Improve comments how to update FQ sources


Summary of changes:
 src/engine/gnc-commodity.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)