docs: document init_chat_model standard params (langchain-ai#27812)

libs/langchain/langchain/chat_models/base.py

@@ -149,7 +149,16 @@ def init_chat_model(
             ``config["configurable"]["{config_prefix}_{param}"]`` keys. If
             config_prefix is an empty string then model will be configurable via
             ``config["configurable"]["{param}"]``.
-        kwargs: Additional keyword args to pass to
+        temperature: Model temperature.
+        max_tokens: Max output tokens.
+        timeout: The maximum time (in seconds) to wait for a response from the model
+            before canceling the request.
+        max_retries: The maximum number of attempts the system will make to resend a
+            request if it fails due to issues like network timeouts or rate limits.
+        base_url: The URL of the API endpoint where requests are sent.
+        rate_limiter: A ``BaseRateLimiter`` to space out requests to avoid exceeding
+            rate limits.
+        kwargs: Additional model-specific keyword args to pass to
             ``<<selected ChatModel>>.__init__(model=model_name, **kwargs)``.
 
     Returns: