gnucash-docs stable: Use &url-docs-gh;

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/7adcfdf4 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/e86ff8b9 (commit)



commit 7adcfdf4efff8a877e3a51ab1fd0008e651b2012
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Wed Aug 23 13:00:02 2023 +0200

    Use &url-docs-gh;



Summary of changes:
 docbook/gnc-docbookx.dtd | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)