integration-docs: Update Capistrano for new doc format.

Part of zulip#29592.

templates/zerver/integrations/capistrano.md

@@ -1,5 +1,9 @@
+# Zulip Capistrano Integration
+
 Get Zulip notifications for your Capistrano deploys!
 
+{start_tabs}
+
 1.  {!create-an-incoming-webhook.md!}
 
 1.  {!download-python-bindings.md!}
@@ -14,26 +18,24 @@ Get Zulip notifications for your Capistrano deploys!
           desc "Post a message to Zulip after deploy"
           task :humbug do
             run_locally "echo 'I just deployed to #{stage}! :tada:' | zulip-send \
-            --user capistrano-bot@example.com --api-key a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5 \
+            --user <email of bot> --api-key a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5 \
             --site={{ api_url }} \
             --stream commits --subject deployments || true"
           end
         end
 
-    The `--user` and `--api-key` should be the email and API key of the Zulip
+{end_tabs}
-    bot created above. You can also put these values in a `~/.zuliprc` file on
-    your Capistrano machine. See our [API docs](/api/) for instructions on
-    creating that file.
-
-!!! tip ""
-
-    You can change the `deploy` above to another step of
-    your deployment process, if you'd like the notification to fire
-    at a different time. See [Capistrano's Before/After Hooks page][1]
-    for more information!
-
-[1]: https://capistranorb.com/documentation/getting-started/before-after/
 
 {!congrats.md!}
 
 ![Capistrano bot message](/static/images/integrations/capistrano/001.png)
+
+### Configuration Options
+
+Customize the notification trigger by replacing `deploy` with any stage of your deployment process.
+
+### Related documentation
+
+[Capistrano's Before/After Hooks page][1]
+
+[1]: https://capistranorb.com/documentation/getting-started/before-after/