Edit Zabbix.md

docs/source/pages/Monitoramento/Zabbix.md

@@ -7,6 +7,7 @@ Criar um sistema de monitoramento com métricas em dashboards e alarmes com base
 ## links
 1. [Zabbix Downloads](https://www.zabbix.com/download)
 2. [Zabbix with Nginx](https://www.erickandrade.com.br/instalando-o-zabbix-6-0-com-postgresql-e-nginx/)
+3. [Postgres Custom Query](https://www.zabbix.com/forum/zabbix-help/457893-postgresql-custom-queries-pgsql-custom-query-what-is-wrong)
 
 
 ## Dependências