docs: clarify deb13 package wording

Refine the package finder copy to state Debian 13 support more clearly and call out the Debian 11 PostgreSQL version limit without repeating the same phrasing.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: guanzhousongmicrosoft

app/packages/page.tsx

@@ -278,8 +278,8 @@ export default function PackagesPage() {
               </p>
               {packageFamily === "apt" ? (
                 <p className="mt-2 text-sm text-amber-300">
-                  Debian 13 is now available in the repository-backed APT flow. Debian 11
-                  currently supports PostgreSQL 16 and 17 in the repository-backed flow.
+                  Debian 13 is now supported in the APT repository-backed install flow. Debian
+                  11 currently supports only PostgreSQL 16 and 17.
                 </p>
               ) : null}
               <div className="mt-4">