message: docs/auth: use env placeholder for secret
diff: @@ -38,7 +38,7 @@ auth:
  connection: ${AUTH_AUTH0_CONNECTION}
  connectionScope: ${AUTH_AUTH0_CONNECTION_SCOPE}
  session:
  - secret: 'supersecret'
  + secret: ${AUTH_SESSION_SECRET}
  ```
  The Auth0 provider is a structure with three configuration keys:
  