Docs: Update manage rbac w. toc and reference to provisioning w. file (#81120)

* docs: toc and reference to provisioning

* Update docs/sources/administration/roles-and-permissions/access-control/manage-rbac-roles/index.md

Co-authored-by: Jack Baldry <jack.baldry@grafana.com>

---------

Co-authored-by: Jack Baldry <jack.baldry@grafana.com>

docs/sources/administration/roles-and-permissions/access-control/manage-rbac-roles/index.md

@@ -20,6 +20,8 @@ weight: 50
 Available in [Grafana Enterprise]({{< relref "../../../../introduction/grafana-enterprise/" >}}) and [Grafana Cloud](/docs/grafana-cloud).
 {{% /admonition %}}
 
+{{< table-of-contents >}}
+
 This section includes instructions for how to view permissions associated with roles, create custom roles, and update and delete roles.
 
 The following example includes the base64 username:password Basic Authorization. You cannot use authorization tokens in the request.
@@ -104,7 +106,7 @@ Create a custom role when basic roles and fixed roles do not meet your permissio
 
 ### Create custom roles using provisioning
 
-File-based provisioning is one method you can use to create custom roles.
+[File-based provisioning]({{< relref "./rbac-grafana-provisioning" >}}) is one method you can use to create custom roles.
 
 1. Open the YAML configuration file and locate the `roles` section.