(update): Adjust update check message.

bin/executable_update-check.sh

@@ -18,7 +18,14 @@ else
     SUMMARY=$(echo "$MSG" | awk -F "." '{print $1}')
     LST="$(aptitude -F %p search '~U')"
     LST="$(echo $LST | tr '\n' ' ')"
+    HOST=$(hostname)
     text="$SUMMARY ($(uname -n)):\n $LST"
-    curl -H "Tags: $(hostname)" -H "Title: Debian Update Check" -H "Icon: https://www.debian.org/logos/openlogo-nd-75.png" -d "Debian update check: $text" https://ntfy.coolify.gaiselmann.de/hetzner
+    curl -H "Markdown: yes" \
+	 -H "Tags: $HOST" \
+	 -H "Title: Debian Update Check" \
+	 -H "Icon: https://www.debian.org/logos/openlogo-nd-75.png" \
+	 -d "$SUMMARY on **$HOST**
+
+	 $LST" https://ntfy.coolify.gaiselmann.de/hetzner
 fi