chore(docs): update client docstring (#2152)

Author: stainless-app[bot]

src/openai/_client.py

@@ -97,7 +97,7 @@ def __init__(
         # part of our public interface in the future.
         _strict_response_validation: bool = False,
     ) -> None:
-        """Construct a new synchronous openai client instance.
+        """Construct a new synchronous OpenAI client instance.
 
         This automatically infers the following arguments from their corresponding environment variables if they are not provided:
         - `api_key` from `OPENAI_API_KEY`
@@ -324,7 +324,7 @@ def __init__(
         # part of our public interface in the future.
         _strict_response_validation: bool = False,
     ) -> None:
-        """Construct a new async openai client instance.
+        """Construct a new async AsyncOpenAI client instance.
 
         This automatically infers the following arguments from their corresponding environment variables if they are not provided:
         - `api_key` from `OPENAI_API_KEY`