message: Mention hasura permission variables
diff: @@ -25,7 +25,7 @@ This is a URL-encoded string, in the following template:
  s:<request.auth>.<checksum>
  ```
  -The request.auth part is a JSON object, in the following layout:
  +The `request.auth` part is a JSON object, which is the same as the [Hasura permission variables](https://hasura.io/docs/1.0/graphql/manual/auth/authentication/index.html#overview) but with the `x-hasura-` prefix removed:
  ``` json
  {
  @@ -37,7 +37,7 @@ The request.auth part is a JSON object, in the following layout:
  }
  ```
  -You can use the `request.auth` parts in your storage rule functions.
  +You can use the `request.auth` variables in your storage rule functions.
  ## Paths
  