[gnome-build-meta.wiki] Update OpenQA for GNOME developers: Fix screenshot

[Sam Thursfield <sthursfield src gnome org>]

commit a3588177bf760045d8f872a5a154e20eb41fc5db
Author: Sam Thursfield <sam afuera me uk>
Date:   Fri Aug 20 16:07:16 2021 +0000

    Update OpenQA for GNOME developers: Fix screenshot

 openqa/OpenQA-for-GNOME-developers.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/openqa/OpenQA-for-GNOME-developers.md b/openqa/OpenQA-for-GNOME-developers.md
index 38c9a7e..70d93bd 100644
--- a/openqa/OpenQA-for-GNOME-developers.md
+++ b/openqa/OpenQA-for-GNOME-developers.md
@@ -38,7 +38,7 @@ If you see "no candidate needle matched" or "`assert_screen` failure", this indi
 
 The OpenQA Web UI lets you compare the actual screenshot with the expected ones. Select a needle in 
'Candidate needles and tags', then use the orange slider to see differences. The 'landscape' and 'eye' icons 
in the list switch between area-only or full diff. In the screenshot below, we have the expected image 
(installation completed) on the left, and the actual screenshot (installation still in progress) on the right.
 
-![image](uploads/e1b3415068ed01db4ce68aada5972b0f/image.png)
+![image](uploads/6020c33f597fbf516fed756541f2f2c2/image.png)
 
 If you think the test failure represents a bug, open an issue against the relevant component. Otherwise, or 
if in doubt, [open a gnome-build-meta issue](https://gitlab.gnome.org/GNOME/gnome-build-meta/-/issues).