[gnome-tetravex] appdata: Use more https

[Jeremy Bicha <jbicha src gnome org>]

commit cc78474412fbf7c8ddd867e13bf1347cbd4f09ac
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Tue Jan 8 12:14:05 2019 -0500

    appdata: Use more https

 data/gnome-tetravex.appdata.xml.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/gnome-tetravex.appdata.xml.in b/data/gnome-tetravex.appdata.xml.in
index 960604a..ff7b638 100644
--- a/data/gnome-tetravex.appdata.xml.in
+++ b/data/gnome-tetravex.appdata.xml.in
@@ -24,7 +24,7 @@
   </screenshots>
   <url type="homepage">https://wiki.gnome.org/Apps/Tetravex</url>
   <url type="bugtracker">https://gitlab.gnome.org/GNOME/gnome-tetravex/issues</url>
-  <url type="donation">http://www.gnome.org/friends/</url>
+  <url type="donation">https://www.gnome.org/friends/</url>
   <url type="help">https://help.gnome.org/users/gnome-tetravex/stable/</url>
   <update_contact>mcatanzaro_at_gnome.org</update_contact>
   <project_group>GNOME</project_group>