[gnome-chess] Use ~ for prereleases in appdata

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f97146fbdc7463293718bce42f159fbc5e8fa54b
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Mar 22 17:31:14 2021 -0500

    Use ~ for prereleases in appdata

 data/org.gnome.Chess.appdata.xml.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/org.gnome.Chess.appdata.xml.in b/data/org.gnome.Chess.appdata.xml.in
index b01cbb7..4b5a4cb 100644
--- a/data/org.gnome.Chess.appdata.xml.in
+++ b/data/org.gnome.Chess.appdata.xml.in
@@ -40,6 +40,7 @@
   </kudos>
   <releases>
     <release version="40.0" date="2021-03-22" />
+    <release version="40~alpha" date="2021-01-07" />
     <release version="3.38.1" date="2020-12-06" />
     <release version="3.38.0" date="2020-09-11" />
     <release version="3.37.3" date="2020-07-02" />