[devhelp] AppData: update screenshots

[Sébastien Wilmet <swilmet src gnome org>]

commit 40ea5e6dbc6f305c71ade812a5510a5251b24948
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Apr 1 16:23:45 2018 +0200

    AppData: update screenshots
    
    I think the link to the wiki didn't work, the screenshot for the flatpak
    is missing in gnome-software. The wiki is anyway not a great place to
    host screenshots for the AppData. Hosting it in the git repo is not
    great either because it makes the git repo bigger, it takes a longer
    time to git clone, to run git gc, etc, and the resulting URL is not nice
    since it requires the git service on the server (it's not just a static
    file). So I've chosen people.gnome.org, if in the future I'm no longer
    around the URL can anyway be changed.

 data/org.gnome.Devhelp.appdata.xml.in |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/data/org.gnome.Devhelp.appdata.xml.in b/data/org.gnome.Devhelp.appdata.xml.in
index c7e3cbd..5203be4 100644
--- a/data/org.gnome.Devhelp.appdata.xml.in
+++ b/data/org.gnome.Devhelp.appdata.xml.in
@@ -32,7 +32,10 @@
   <url type="donation">http://www.gnome.org/friends/</url>
   <screenshots>
     <screenshot type="default">
-      <image>https://wiki.gnome.org/Apps/Devhelp?action=AttachFile&amp;do=view&amp;target=devhelp.png</image>
+      <image>https://people.gnome.org/~swilmet/devhelp/screenshot-1.png</image>
+    </screenshot>
+    <screenshot>
+      <image>https://people.gnome.org/~swilmet/devhelp/screenshot-2.png</image>
     </screenshot>
   </screenshots>
   <project_group>GNOME</project_group>