Update v8_09.md

Author: mythz

MyApp/_pages/releases/v8_09.md

@@ -2107,8 +2107,8 @@ the same APIs with **both** Identity Auth and API Keys, enabling you to:
 - Provide programmatic access via API Keys
 - Maintain all the benefits of API Keys
 
-To achieve this, Users will need to have a valid API Key generated for them which would then need to be added to the `apikey`
-Claim in the `UserClaimsPrincipalFactory` to be included in their Identity Auth Cookie:
+To achieve this, users will need to have a valid API Key generated for them which would then need to be added 
+to the `apikey` Claim in the `UserClaimsPrincipalFactory` to be included in their Identity Auth Cookie:
 
 ```csharp
 // Program.cs
@@ -2161,9 +2161,9 @@ public class QueryOrders : QueryDb<Order> { }
 
 ## AI Chat
 
-We're excited to introduce **AI Chat** — a refreshingly simple solution for integrating AI into your applications by 
-unlocking the full value of the OpenAI Chat API. Unlike most other OpenAI SDKs and Frameworks, all of AI Chat's features
-are centered around arguably the most important API in our time - OpenAI's simple [Chat Completion API](https://platform.openai.com/docs/api-reference/chat)
+We're excited to introduce **AI Chat** — a refreshingly simple solution for integrating AI into your applications 
+by unlocking the full value of the OpenAI Chat API. Unlike most other OpenAI SDKs and Frameworks, all of AI Chat's 
+features are centered around arguably the most important API in our time - OpenAI's simple [Chat Completion API](https://platform.openai.com/docs/api-reference/chat)
 i.e. the primary API used to access Large Language Models (LLMs).
 
 We've had several attempts at adding a valuable layer of functionality for harnessing AI into our Apps, including:
@@ -2261,6 +2261,14 @@ public class ConfigureAiChat : IHostingStartup
 }
 ```
 
+#### Prerequisites:
+
+As AI Chat protects its APIs and UI with Identity Auth or API Keys, you'll need to enable the [API Keys Feature](https://docs.servicestack.net/auth/apikeys) if you haven't already:
+
+:::sh
+x mix apikeys
+:::
+
 ## Simple, Not Simplistic
 
 How simple is it to use? It's just as you'd expect, your App logic need only bind to a simple `IChatClient` interface