[calls] metainfo: Correct screenshot URLs

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit e8a74850860a233e57c54e4ce8c4a9082515cba2
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Mon Sep 19 20:17:20 2022 +0200

    metainfo: Correct screenshot URLs
    
    Fixes #497

 data/org.gnome.Calls.metainfo.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/org.gnome.Calls.metainfo.xml b/data/org.gnome.Calls.metainfo.xml
index 82d3e3d3..bb547931 100644
--- a/data/org.gnome.Calls.metainfo.xml
+++ b/data/org.gnome.Calls.metainfo.xml
@@ -24,12 +24,12 @@
       <screenshot type="default">
         <!-- Translators: A screenshot description. -->
         <caption>Placing a call</caption>
-        <image type="source" width="720" 
height="1296">https://gitlab.gnome.org/GNOME/calls/raw/master/data/screenshots/calling.png</image>
+        <image type="source" width="720" 
height="1296">https://gitlab.gnome.org/GNOME/calls/raw/main/data/screenshots/calling.png</image>
       </screenshot>
       <screenshot>
         <!-- Translators: A screenshot description. -->
         <caption>The call history</caption>
-        <image type="source" width="720" 
height="1296">https://gitlab.gnome.org/GNOME/calls/raw/master/data/screenshots/history.png</image>
+        <image type="source" width="720" 
height="1296">https://gitlab.gnome.org/GNOME/calls/raw/main/data/screenshots/history.png</image>
       </screenshot>
     </screenshots>