gnucash-docs maint: Release Documentation for Gnucash 4.8

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/273f7d3f (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/54376977 (commit)



commit 273f7d3fe74328e55ece88fbb56d27445b29e586
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Sep 28 11:51:04 2021 -0700

    Release Documentation for Gnucash 4.8



Summary of changes:
 CMakeLists.txt             |  2 +-
 ChangeLog                  | 16 ++++++++++++++++
 NEWS                       |  3 +++
 docbook/gnc-docbookx.dtd   |  6 +++---
 guide/C/gnucash-guide.xml  | 10 ++++++++++
 guide/de/gnucash-guide.xml | 11 +++++++++++
 guide/it/gnucash-guide.xml | 11 +++++++++++
 guide/ja/gnucash-guide.xml | 11 +++++++++++
 guide/pt/gnucash-guide.xml |  8 ++++++++
 manual/C/gnucash-help.xml  |  8 ++++++++
 manual/de/gnucash-help.xml |  8 ++++++++
 manual/it/gnucash-help.xml |  8 ++++++++
 manual/pt/gnucash-help.xml |  8 ++++++++
 13 files changed, 106 insertions(+), 4 deletions(-)