add whitelist note

Author: thatkev

guide/Request/httpRequest_ai.md

@@ -1,6 +1,10 @@
 # $httpRequest
 
-Make HTTP requests with custom content and headers, and retrieve the response.
+Performs a HTTP request, with a content and headers and returns the response content.
+
+::: warning Warning
+In order to use `$httpRequest`, the API you wish to use needs to be whitelisted. To request a whitelist, please open a ticket in our Support Server.
+:::
 
 ## Usage
 
@@ -46,4 +50,4 @@ This example demonstrates sending a POST request with JSON data to an API.
     $if[$httpRequestStatus!=200;Error: Request failed with status code $httpRequestStatus;Request successful: $response]
     ```
 
-*   **Response Size Limit:** The response data must be less than 1 MB in size. Requests exceeding this limit will result in an error.
+*   **Response Size Limit:** The response data must be less than 1 MB in size. Requests exceeding this limit will result in an error.