slapos_crm: fixup typo

master/bt5/slapos_crm/SkinTemplateItem/portal_skins/slapos_crm_monitoring/ComputeNode_checkState.py

@@ -101,7 +101,7 @@ if not should_notify:
       # Ignore if there isnt any data on it
       continue
     
-    last_contact = max(DateTime(instance_access_status.get('created_at')), last_contact)
+    last_contact = max(DateTime(installation_access_status.get('created_at')), last_contact)
     if (now - DateTime(installation_access_status.get('created_at'))) < 1.01:
       should_notify = False
       description = ""