Add missing arg to `update_credentials` doc comment
Add the missing `password_encryption_cost` arg to the doc comment on the
`update_credentials` function in the CredentialsStore.
@@ -163,6 +163,7 @@ pub trait CredentialsStore: Send + Sync {
/// * `user_id` - The unique identifier of the user the credential belongs to
/// * `updated_username` - The updated username for the user
/// * `updated_password` - The updated password for the user
+ /// * `password_encryption_cost` - Cost of the password encryption
///
/// # Errors
///
