gnucash-htdocs master: Replace obsolete <tt> mostly by <kbd>

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-htdocs/commit/2376fae8 (commit)
	from  https://github.com/Gnucash/gnucash-htdocs/commit/8126925e (commit)



commit 2376fae85e196d6496b89c19606b74cb61f6edfd
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sun Oct 11 03:08:09 2020 +0200

    Replace obsolete <tt> mostly by <kbd>



Summary of changes:
 news/030429-outage.news | 32 ++++++++++++++++----------------
 news/031106-debian.news |  8 ++++----
 2 files changed, 20 insertions(+), 20 deletions(-)