gnucash-htdocs master: Unify currently supported OSes

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-htdocs/commit/afc0cf91 (commit)
	from  https://github.com/Gnucash/gnucash-htdocs/commit/caee8002 (commit)



commit afc0cf91e29b1321fcaa93c6e00c9b88fe11cccc
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sun Dec 19 19:16:33 2021 +0100

    Unify currently supported OSes



Summary of changes:
 download.phtml              | 8 ++++----
 externals/global_params.php | 3 +++
 index.phtml                 | 9 ++++-----
 3 files changed, 11 insertions(+), 9 deletions(-)