[gnome-software: 4/6] data: clarify non-standard behavior for external-appstream-system-wide

[Milan Crha <mcrha src gnome org>]

commit 5306ad2c8c5477189e1c66267c3db187c8c6c4ec
Author: Pablo Correa Gómez <ablocorrea hotmail com>
Date:   Tue Dec 28 20:07:29 2021 +0100

    data: clarify non-standard behavior for external-appstream-system-wide
    
    As gs_external_appstream_refresh_user installs files in the non-standard
    directory XDG_DATA_HOME (the standard only defines system-wide directories),
    the documentation should specify such non-standard behavior.

 data/org.gnome.software.gschema.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/org.gnome.software.gschema.xml b/data/org.gnome.software.gschema.xml
index 0e5706b7c..851202a90 100644
--- a/data/org.gnome.software.gschema.xml
+++ b/data/org.gnome.software.gschema.xml
@@ -137,7 +137,7 @@
     </key>
     <key name="external-appstream-system-wide" type="b">
       <default>false</default>
-      <summary>Install the AppStream files to a system-wide location for all users</summary>
+      <summary>Install the AppStream files to a system-wide location for all users. If false, files are 
installed in non-standard $XDG_DATA_HOME/app-info/xmls directory</summary>
     </key>
     <key name="packaging-format-preference" type="as">
       <default>['']</default>