info.xml: author e-mail address

CHANGELOG.md

@@ -18,6 +18,7 @@ instead carried by the app description, the git tag, the release, and this file.
   the stored one. Administrators are notified of the change.
 
 ### Changed
+- App store listing: the author's e-mail address is shown.
 - App store listing: the homepage link points to the GitHub repository instead of back to the
   app store page itself.
 

appinfo/info.xml

@@ -11,7 +11,7 @@ thoroughly and usable alongside your current backup, but not yet a drop-in repla
 See the README for known limitations and the recovery kit before relying on it.]]></description>
     <version>0.9.2</version>
     <licence>agpl</licence>
-    <author>Dillard Blom</author>
+    <author mail="dillard.blom@ensembia.com">Dillard Blom</author>
     <namespace>NgBackup</namespace>
     <documentation>
         <admin>https://github.com/dillardblom/ng_backup/blob/main/docs/HOWTO.md</admin>