[DPE-7817] Remove mention to admin extra user role (#1058)

* Remove mention to admin extra user role

* Fix Terraform provider link

Signed-off-by: Marcelo Henrique Neppel <[email protected]>

* Update docs/explanation/users.md

Co-authored-by: Andreia <[email protected]>

---------

Signed-off-by: Marcelo Henrique Neppel <[email protected]>
Co-authored-by: Andreia <[email protected]>

Author: marceloneppel

docs/explanation/users.md

@@ -109,13 +109,7 @@ If password rotation is required for users used in relations, the relation must
 
 ### Extra user roles
 
-When an application charm requests a new user through the relation/integration it can specify that the user should have the `admin` role in the `extra-user-roles` field. The `admin` role enables the new user to read and write to all databases (for the `postgres` system database it can only read data) and also to create and delete non-system databases.
-
-```{note}
-`extra-user-roles` is only supported by the modern interface `postgresql_client`. It is not supported for the legacy `pgsql` interface. R
-
-Read more about the supported charm interfaces in [](/explanation/interfaces-and-endpoints).
-```
+When an application charm requests a new user through the relation/integration, it can specify that the user should be part of a predefined role to give them additional permissions. Please check [](/explanation/roles) for the list of available roles.
 
 ## Identity users
 

docs/how-to/deploy/index.md

@@ -29,7 +29,7 @@ juju deploy postgresql --channel 16/stable -n <number_of_replicas>
 > See also: [`juju deploy` command](https://canonical-juju.readthedocs-hosted.com/en/latest/user/reference/juju-cli/list-of-juju-cli-commands/deploy/)
 
 **To deploy with `terraform juju`**, follow the guide [How to deploy using Terraform].
-> See also: [Terraform Provider for Juju documentation](https://canonical-terraform-provider-juju.readthedocs-hosted.com/en/latest/)
+> See also: [Terraform Provider for Juju documentation](https://canonical-terraform-provider-juju.readthedocs-hosted.com/latest/)
 
 If you are not sure where to start or would like a more guided walkthrough for setting up your environment, see the [Charmed PostgreSQL tutorial][Tutorial].