gnucash-docs maint: Add a footnote to the translation paragraph

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/ce0dbfde (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/6e78e4d9 (commit)



commit ce0dbfdeaeb2489298203750844981eb6d114935
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sat Mar 28 00:55:26 2020 +0100

    Add a footnote to the translation paragraph
    
    linking https://wiki.gnucash.org/wiki/Translation



Summary of changes:
 docbook/gnc-docbookx.dtd | 1 +
 guide/C/ch_oview.xml     | 8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)