Docs: add note that support for Auth0 "audience" feature is not available (#96507)

* add note that support for Auth0 audience feature is not available

* Update docs/sources/setup-grafana/configure-security/configure-authentication/generic-oauth/index.md

Co-authored-by: Misi <mgyongyosi@users.noreply.github.com>

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Co-authored-by: Misi <mgyongyosi@users.noreply.github.com>

docs/sources/setup-grafana/configure-security/configure-authentication/generic-oauth/index.md

@@ -454,6 +454,10 @@ To set up Generic OAuth authentication with Descope, follow these steps:
 
 ### Set up OAuth2 with Auth0
 
+{{< admonition type="note" >}}
+Support for the Auth0 "audience" feature is not currently available in Grafana. For roles and permissions, the available options are described [here]({{< relref "../../../../administration/roles-and-permissions/" >}}).
+{{< /admonition >}}
+
 To set up Generic OAuth authentication with Auth0, follow these steps:
 
 1. Create an Auth0 application using the following parameters: