Update web/blog/2021-03-05-postgres-as-a-cron-server.md

Co-authored-by: Steve Chavez <stevechavezast@gmail.com>

web/blog/2021-03-05-postgres-as-a-cron-server.md

@@ -89,7 +89,7 @@ select
     select status
     from
       http_post(
-        'https://webhook.site/223c8a43-725b-4cbd-b1fe-d0da73353a6b', -- webhook URL
+        'https://webhook.site/223c8a43-725b-4cbd-b1fe-d0da73353a6b', -- webhook URL, replace the ID(223c8..) with your own
         '{"hello": "world"}', -- payload
         'application/json'
       )
@@ -188,4 +188,4 @@ If you're familiar with `C`, you could also help `@pramsey` to implement async f
 
 There are plenty of ways to run cron jobs these days. You can trigger them from your local machine. You can install them on a VPS. You can schedule Serverless functions. You can use a paid service. You can use GitHub Actions.
 
-Is Postgres the best place to put your cron jobs? `¯\_(ツ)_/¯`
+Is Postgres the best place to put your cron jobs? `¯\_(ツ)_/¯`