[docs] export aisdk (#1074)

# why

Updating docs to reflect aisdk can be imported directly

# what changed

The model page

# test plan

Reviewed page with mintlify dev locally

Author: chrisreadsf

docs/configuration/models.mdx

@@ -168,7 +168,7 @@ Vercel AI SDK supports providers for OpenAI, Anthropic, and Google, along with s
 
 To get started, you'll need to install the `ai` package and the provider you want to use. For example, to use Amazon Bedrock, you'll need to install the `@ai-sdk/amazon-bedrock` package.
 
-You'll also need to use the [Vercel AI SDK external client](https://github.com/browserbase/stagehand/blob/main/examples/external_clients/aisdk.ts) as a template to create a client for your model.
+You'll also need to import the [Vercel AI SDK external client](https://github.com/browserbase/stagehand/blob/main/lib/llm/aisdk.ts) which is exposed as `AISdkClient` to create a client for your model.
 
 <Tabs>
 	<Tab title="npm">
@@ -190,13 +190,13 @@ You'll also need to use the [Vercel AI SDK external client](https://github.com/b
 	</Tab>
 </Tabs>
 
-To get started, you can use the [Vercel AI SDK external client](https://github.com/browserbase/stagehand/blob/84f810b4631291307a32a47addad7e26e9c1deb3/examples/external_clients/aisdk.ts) as a template to create a client for your model.
+To get started, you can use the [Vercel AI SDK external client](https://github.com/browserbase/stagehand/blob/main/lib/llm/aisdk.ts) which is exposed as `AISdkClient` to create a client for your model.
 
 ```ts
 // Install/import the provider you want to use.
 // For example, to use OpenAI, import `openai` from @ai-sdk/openai
 import { bedrock } from "@ai-sdk/amazon-bedrock";
-import { AISdkClient } from "./external_clients/aisdk";
+import { AISdkClient } from "@browserbasehq/stagehand";
 
 const stagehand = new Stagehand({
   llmClient: new AISdkClient({