add beta to front matter

Author: pwseg

src/connections/destinations/catalog/actions-webhook-extensible/index.md

@@ -1,6 +1,7 @@
 ---
 title: Extensible Webhooks Destination
 id: 66b1f528d26440823fb27af9
+beta: true
 ---
 
 {% include content/plan-grid.md name="actions" %}