Keycloak interation Mapper misleading screenshot and description

The `Claim JSON Type` is different between the description and the screenshot 
![image](https://user-images.githubusercontent.com/12915251/223619223-2fd1b065-2c1d-4ae9-bbf6-04ece6aa8fa3.png)
![image](https://graphql-engine-cdn.hasura.io/learn-hasura/assets/graphql-hasura-authentication/keycloak/keycloak-allowed-roles-mapper.png)