message: Clarify request.auth usage
diff: @@ -37,7 +37,7 @@ The `request.auth` part is a JSON object, which is the same as the [Hasura permi
  }
  ```
  -You can use the `request.auth` variables in your storage rule functions.
  +You can access these variables through `request.auth` (for example `request.auth['default-role']`) when creating your storage rules.
  ## Paths
  