[gnome-software.wiki] Update Software metadata

[Philip Withnall <pwithnall src gnome org>]

commit b0af68a2d85008276fb7fcab76242fe3b19df08d
Author: Philip Withnall <philip tecnocode co uk>
Date:   Fri Aug 20 17:34:25 2021 +0000

    Update Software metadata

 Software-metadata.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/Software-metadata.md b/Software-metadata.md
index 9039a9d..49d77c3 100644
--- a/Software-metadata.md
+++ b/Software-metadata.md
@@ -54,7 +54,9 @@ Storage <a name="storage"></a>
 
 <img align="right" src="uploads/c7ec210bab52f08e4c5f3578b785fdf0/storage-tile.png">
 
-The download and installed size of an application is calculated from data provided by the backend (such as 
flatpak or an RPM), and is not specified in the metadata provided by the application. There is nothing you 
can do to affect this tile by editing an application’s metainfo file. It’s listed here for completeness.
+GNOME Software displays a storage tile on the details page for an application. If the application is not 
installed, this displays the estimated download size needed to install it. If the application is installed, 
it displays the storage space used by the application.
+
+The sizes are calculated from data provided by the GNOME Software backend (such as flatpak or an RPM), and 
are not specified in the metadata provided by the application. There is nothing you can do to affect this 
tile by editing an application’s metainfo file. It’s listed here for completeness.
 
 <br clear="both"/>