[gimp-web] More flatpak changes in dev download page and also the 2.99.2 news.

[Jehan <jehanp src gnome org>]

commit 663aa25d1c88e7db5b4322f3ecdfdd1f111eb755
Author: Jehan <jehan girinstud io>
Date:   Sun Nov 8 16:40:34 2020 +0100

    More flatpak changes in dev download page and also the 2.99.2 news.
    
    Ok just dropping the idea of multi-line code blocks. It just never
    works. Doing it single line instead.
    
    Also adding a title for Unix-like OSes with no Flatpak support.
    
    Finally updating retroactively the 2.99.2 news to use the flatpakref
    too.

 .../2020/2020-11_GIMP-2.99.2_Released/index.md     |  3 +--
 .../newgimp/templates/downloads-development.html   | 24 ++++++++++++++--------
 2 files changed, 16 insertions(+), 11 deletions(-)
---
diff --git a/content/news/2020/2020-11_GIMP-2.99.2_Released/index.md 
b/content/news/2020/2020-11_GIMP-2.99.2_Released/index.md
index 9eeb0e51..76968630 100644
--- a/content/news/2020/2020-11_GIMP-2.99.2_Released/index.md
+++ b/content/news/2020/2020-11_GIMP-2.99.2_Released/index.md
@@ -615,8 +615,7 @@ hidden release branch (you won't find this information on the public
 web page). This command will allow you to install GIMP 2.99.2:
 
 ```
-flatpak remote-add --user flathub-beta https://flathub.org/beta-repo/flathub-beta.flatpakrepo
-flatpak install --user flathub-beta org.gimp.GIMP
+flatpak install https://flathub.org/repo/appstream/org.gimp.GIMP.flatpakref
 ```
 
 From now on, you will be able to update to new development builds as
diff --git a/themes/newgimp/templates/downloads-development.html 
b/themes/newgimp/templates/downloads-development.html
index 3e716182..bb72991c 100644
--- a/themes/newgimp/templates/downloads-development.html
+++ b/themes/newgimp/templates/downloads-development.html
@@ -100,19 +100,24 @@
         <em>Note: If you installed both the stable and beta
         repositories, the desktop (menus, etc.) will see only one
         version at a time.
-        To select which version your desktop should see, run one of
-        these commands for respectively either the stable or the beta
-        version:</em>
+        To make sure your desktop sees the development version, run this
+        command:
+        </em>
         </p>
         <p>
-        <pre><code>
-          flatpak make-current --user org.gimp.GIMP stable
-          flatpak make-current --user org.gimp.GIMP beta
-        </code></pre>
+        <code>flatpak make-current --user org.gimp.GIMP beta</code>
         </p>
         <p>
-        <em>You may also create shortcuts running these specific
-        commands.</em>
+        <em>Or respectively to restore the stable version as the visible
+        GIMP application:
+        </em>
+        </p>
+        <p>
+        <code>flatpak make-current --user org.gimp.GIMP stable</code>
+        </p>
+        <p>
+        <em>You may also create shortcuts running specificly one of the
+        other version.</em>
         </p>
 
 <!--
@@ -169,6 +174,7 @@
 
 {% endif %}
 -->
+        <h3>Systems without flatpak support</h3>
         <p>
             GIMP can also run on Solaris and is available for the BSD
             family of systems such as FreeBSD and OpenBSD. Third party