[PATCH v2 02/14] website: pages: Get GNU Boot: separate install from upgrade.

[Denis 'GNUtoo' Carikli]

This enables to later on have some separation between the first
installation which typically requires to open the computer or at least
need a special procedure like for I945 ThinkPads, with upgrade
instructions that just require to run 'flashrom -p internal -w
<gnuboot-image>'.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
---
ChangeLog:
- New commit, splited from "website: pages: unify Download, Install
  and Buy preinstalled.".
---
 website/pages/docs/install/index.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/website/pages/docs/install/index.md 
b/website/pages/docs/install/index.md
index e68cfd0..407ead2 100644
--- a/website/pages/docs/install/index.md
+++ b/website/pages/docs/install/index.md
@@ -30,6 +30,12 @@ project](../../contact.md): we are looking for information 
on the
 product being sold (flash chip size, customization, etc) to best
 support them.
 
+Upgrade yourself from an existing installation
+==============================================
+
+There is [general purpose documentation](install.md) for technical
+users that can help you upgrade to a newer GNU Boot version.
+
 Installation
 ============
 
-- 
2.45.1