integration-docs: Update Rundeck for new doc format.

Part of zulip#29592.

zerver/webhooks/rundeck/doc.md

@@ -1,20 +1,31 @@
-Receive Job Notifications in Zulip!
+# Zulip Rundeck integration
+
+Receive Rundeck job notifications in Zulip!
+
+{start_tabs}
 
 1. {!create-channel.md!}
 
 1. {!create-an-incoming-webhook.md!}
 
-1. {!generate-integration-url.md!}
+1. {!generate-webhook-url-basic.md!}
 
-1. Go to your Rundeck web interface and click on the desired job.
-   Click on **Actions** and then select **Edit this Job...**.
-   Go to the **Notifications** tab.
+1. Go to your Rundeck web interface, and click on the desired job.
+   Click on **Actions**, and select **Edit this Job**.
 
-1. Next to the desired event, click **Add Notification**. Select
-   **Send Webhook** as the Notification Type. Enter the URL constructed
-   above. Ensure payload format is **JSON** and Method is **POST**.
-   Click **Save**.
+1. Go to the **Notifications** tab. Next to the desired event, click
+   **Add Notification**.
+
+1. Select **Send Webhook** as the Notification Type. Enter the URL
+   generated above. Ensure payload format is **JSON**, and the method is
+   **POST**. Click **Save**.
+
+{end_tabs}
 
 {!congrats.md!}
 
 ![Rundeck Integration](/static/images/integrations/rundeck/001.png)
+
+### Related documentation
+
+{!webhooks-url-specification.md!}