[DOCS] SAML with Azure Active Directory using outdate API

This [page](https://www.elastic.co/guide/en/cloud/current/ec-securing-clusters-saml-azure.html) the last section for Configure SAML with Azure AD to access Kibana that discusses "Role Mapping" has an example that leverages an outdate API. Instead of `POST /_xpack/security/role_mapping/SAML_kibana`, the API should be `POST /_security/role_mapping/SAML_kibana`

This example could be made more complete by showing how to create a role against an Active Directory group rather than which I don't believe is a default returned from Azure AD into our Name field. By default, I believe its the user's principal, which based upon the example configurations above would be the users email address.

Ouvrez la page de documentation SAML avec Azure AD indiquée par le lien et repérez la dernière section « Role Mapping ». Mettez à jour l’exemple obsolète de l’API de mappage des rôles, puis examinez la configuration Azure AD environnante afin de déterminer si l’exemple doit utiliser le principal de l’utilisateur ou un groupe Active Directory, et vérifiez la documentation rendue.

Rédigé par le modèle d'indexation à partir du texte de l'issue.