* Make sure Metric field in Discord notification is never empty
Discord uniquely does not send the alert if the metric field is empty, which can happen in some cases, such as when the legend is {{hostname}}.
Signed-off-by: Levi Harrison <levisamuelharrison@gmail.com>
* Changed name of empty metric in Discord alert
Signed-off-by: Levi Harrison <levisamuelharrison@gmail.com>