Update stagehand.mdx

add link for what providers are supported by stagehand

Author: kathayl

src/content/docs/browser-rendering/platform/stagehand.mdx

@@ -183,7 +183,7 @@ const stagehand = new Stagehand({
 
 ## Use a custom model
 
-You can configure Stagehand to use models from third-party providers, including OpenAI or Anthropic, by providing your own credentials.
+If you'd like to use a model outside of Workers AI, you can configure Stagehand to use models from supported [third-party providers](https://docs.stagehand.dev/configuration/models#supported-providers), including OpenAI and Anthropic, by providing your own credentials.
 
 In this example, you will configure Stagehand to use [OpenAI](https://openai.com/). You will need an OpenAI API key. Cloudflare recommends storing your API key as a [secret](/workers/configuration/secrets/).