gnucash-docs maint: Multiple changes pushed

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/6dfa95a7 (commit)
	 via  https://github.com/Gnucash/gnucash-docs/commit/15219e34 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/ee5f0f05 (commit)



commit 6dfa95a73ecdd46801eb7d1a34c1b49749fe51d2
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Mon Jul 5 22:00:48 2021 +0200

    Bug 798226 postprocessing: xmlformat

commit 15219e34e198c16ab5fa18e759e3ec9039fefa83
Author: TANIGUCHI Yasuaki <yasuakit at gmail.com>
Date:   Mon Jul 5 20:08:38 2021 +0200

    Bug 798226 - minor mistakes in Tutorial and Concepts guide 2



Summary of changes:
 guide/C/ch_accts.xml  |  41 +++++-------
 guide/C/ch_basics.xml |  28 ++++----
 guide/C/ch_txns.xml   | 179 ++++++++++++++++++++------------------------------
 3 files changed, 100 insertions(+), 148 deletions(-)