fix: package upgrades no longer ask the configuration questions.

README.md

@@ -86,8 +86,8 @@ that deploy a router on Azure or GCP.
 
 `/etc/vpn-router/vpn-router.json` is JSON, mode 0600, and is created on first install. It
 is managed with `ucf`, so it is yours to edit: a later `dpkg-reconfigure` applies the answers
-given and asks before touching anything you altered by hand, and an upgrade leaves the file as
-it is and asks nothing. Settings the file leaves out take their defaults when it is read, so a
+given and asks before touching anything you altered by hand, and an upgrade asks no questions
+and leaves the file as it is. Settings the file leaves out take their defaults when it is read, so a
 file written by cloud-init or by hand needs only the settings that differ. A complete example is
 installed at `/usr/share/doc/vpn-router/vpn-router.json.example`.