docs: add openai link on basic usage

Author: ishaksebsib

apps/docs/content/docs/(get-started)/basic-usage.mdx

@@ -8,7 +8,7 @@ For example, here’s how you can generate text with various models using the AI
 
 ### Enable the [Provider](/docs/#model-providers) of your choice
 
-You can enable the provider you want by using the feature flag of the provider. e.g. for OpenAI
+You can enable the provider you want by using the feature flag of the provider. e.g. for [OpenAI](/docs/providers/openai)
 
 ```bash
 cargo add aisdk --features openai # anthropic, google or any other provider