gnucash-docs maint: Improve xmlformat README, feedback by CWehli

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/69ff5ded (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/1cc6aa97 (commit)



commit 69ff5dedc92b33db31b0adc9ee23c5b1de4ffb4e
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Fri Apr 23 20:31:59 2021 +0200

    Improve xmlformat README, feedback by CWehli



Summary of changes:
 util/xmlformat/README | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)