Update single_stats_custom_dashboard.yml

.gitlab/dashboards/single_stats_custom_dashboard.yml

@@ -4,9 +4,10 @@ panel_groups:
     panels:
       - title: Prometheus
         type: single-stat
+        max_value: 120
         metrics:
           - id: single_stat_offset
-            query: 'max(go_memstats_alloc_bytes{job="prometheus"})'
-            unit: bytes
+            query: 'max(go_memstats_alloc_bytes{job="prometheus"}) / 1024 /1024'
+            unit: '%'
             label: "Max"
             metric_id: 3000