message: backstage-create-app doesn't add vital init() piece automatically
  You have to adjust your `index.html` template file manually.
diff: @@ -24,6 +24,8 @@ app:
  # env: 'staging'
  ```
  +If during [`yarn backstage-create-app`](https://github.com/backstage/backstage/tree/master/packages/create-app) time your [`app-config.yaml`](https://github.com/backstage/backstage/blob/master/app-config.yaml#L5) file did not have this configuration, you have to adjust your [`packages/app/public/index.html`](https://github.com/backstage/backstage/blob/master/packages/app/public/index.html#L64) to include the Datadog RUM `init()` section manually.
  +
  The `clientToken` and `applicationId` are generated from the Datadog RUM page
  following
  [these instructions](https://docs.datadoghq.com/real_user_monitoring/browser/).
  