update deprecation warning for select_one

Author: paigecalvert

docs/reference/custom-resource-config.mdx

@@ -650,7 +650,7 @@ spec:
 ### `select_one` (Deprecated)
 
 :::important
-The `select_one` item type is deprecated and is not recommended for use. To display config items with multiple options, use the [`radio`](#radio) or [`dropdown`](#dropdown) item types instead.
+The `select_one` item type is deprecated and is replaced by [`radio`](#radio).
 :::
 
 `select_one` items must contain nested items. The nested items are displayed as radio buttons in the Admin Console.