Merge pull request #127488 from FlorentATo/container-app-key-vault

docs: Use Azure RBAC role to fetch secrets from Key Vault

Author: v-dirichards

articles/container-apps/manage-secrets.md

@@ -130,7 +130,7 @@ To reference a secret from Key Vault, you must first enable managed identity in
 
 To enable managed identity in your container app, see [Managed identities](managed-identity.md).
 
-To grant access to Key Vault secrets, [create an access policy](/azure/key-vault/general/assign-access-policy) in Key Vault for the managed identity you created. Enable the "Get" secret permission on this policy.
+To grant access to Key Vault secrets, grant the Azure RBAC role [Key Vault Secrets User](/azure/role-based-access-control/built-in-roles/security#key-vault-secrets-user) to the managed identity.
 
 # [Azure portal](#tab/azure-portal)