Add link to Extensions documentation

Author: mikecp

16/umbraco-cms/reference/content-delivery-api/additional-preview-environments-support.md

@@ -13,13 +13,13 @@ The way to achieve this beyond Umbraco 14 is to create and register an [Extensio
 With Umbraco, you can save and preview draft content before going live. The preview feature allows you to visualize how a page will look like once it is published, directly from within the backoffice. This is also possible for the Content Delivery API data. You can extend the preview functionality in the backoffice by configuring external preview URLs for client libraries consuming the Content Delivery API.
 
 {% hint style="info" %}
-To get familiar with the preview functionality in the Content Delivery API, please refer to the [Preview concept](https://docs.umbraco.com/umbraco-cms/reference/content-delivery-api#preview) section.
+To get introduced to the preview functionality in the Content Delivery API, please refer to the [Preview concept](https://docs.umbraco.com/umbraco-cms/reference/content-delivery-api#preview) section.
 {% endhint %}
 
 {% hint style="info" %}
-The support for configuring additional preview environments in the Content Delivery API was introduced in version 12.3.
+Support for configuring additional preview environments in the Content Delivery API was introduced in version 12.3.
 {% endhint %}
 
 {% hint style="info" %}
-There are plans to simplify this process. In an upcoming major version of Umbraco, a UI will be introduced, allowing you to configure these custom preview URLs directly from the backoffice.
+An upcoming release of Umbraco will allow users to configure custom preview URLs directly in the backoffice.
 {% endhint %}