Update search.md

docs/examples/search.md

@@ -13,7 +13,7 @@ The `Search` class is a Pydantic model that defines the structure of the search
 ```python
 import instructor
 from openai import OpenAI
-from typing import Iterable
+from typing import Iterable, Literal
 from pydantic import BaseModel, Field
 
 # Apply the patch to the OpenAI client