[gnome-boxes] gnome-nightly.xml: update the url for the iso img

[Felipe Borges <felipeborges src gnome org>]

commit 1593f6fd2813db18f6e8ef5486571b220ac7aa5d
Author: Jordan Petridis <jordan centricular com>
Date:   Mon Sep 7 15:46:50 2020 +0300

    gnome-nightly.xml: update the url for the iso img
    
    https://gitlab.gnome.org/GNOME/gnome-build-meta/-/merge_requests/847

 data/osinfo/gnome-nightly.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/osinfo/gnome-nightly.xml b/data/osinfo/gnome-nightly.xml
index 63ed32d8..d2a8ba9d 100644
--- a/data/osinfo/gnome-nightly.xml
+++ b/data/osinfo/gnome-nightly.xml
@@ -45,7 +45,7 @@
     </resources>
 
     <media arch="x86_64">
-      <url>https://gnome-build-meta.s3.amazonaws.com/latest/installer.iso</url>
+      <url>https://gnome-build-meta.s3.amazonaws.com/latest/gnome_os_installer.iso</url>
       <iso>
         <volume-id>GNOME-OS-Nightly-x86_64</volume-id>
       </iso>