Change message to description

Signed-off-by: ArthurSens <arthursens2005@gmail.com>

jsonnet/kube-prometheus/components/mixin/alerts/general.libsonnet

@@ -7,7 +7,7 @@
           {
             alert: 'TargetDown',
             annotations: {
-              message: '{{ printf "%.4g" $value }}% of the {{ $labels.job }}/{{ $labels.service }} targets in {{ $labels.namespace }} namespace are down.',
+              description: '{{ printf "%.4g" $value }}% of the {{ $labels.job }}/{{ $labels.service }} targets in {{ $labels.namespace }} namespace are down.',
             },
             expr: '100 * (count(up == 0) BY (job, namespace, service) / count(up) BY (job, namespace, service)) > 10',
             'for': '10m',
@@ -18,7 +18,7 @@
           {
             alert: 'Watchdog',
             annotations: {
-              message: |||
+              description: |||
                 This is an alert meant to ensure that the entire alerting pipeline is functional.
                 This alert is always firing, therefore it should always be firing in Alertmanager
                 and always fire against a receiver. There are integrations with various notification