Docs exposeConfig for LLM connectors (#2437)

Fixes #1003 by providing info about how to use the exposeConfig
parameter for preconfigured connectors to improve debugging for LLM
connectors.

---------

Co-authored-by: florent-leborgne <[email protected]>

Author: benironside

solutions/security/ai/set-up-connectors-for-large-language-models-llm.md

@@ -32,7 +32,16 @@ Follow these guides to connect to one or more third-party LLM providers:
 
 You can [connect to LM Studio](/solutions/security/ai/connect-to-own-local-llm.md) to use a custom LLM deployed and managed by you.
 
+## Preconfigured connectors
 
+```{applies_to}
+stack: ga 9.0
+serverless: unavailable
+```
+
+You can use [preconfigured connectors](kibana://reference/connectors-kibana/pre-configured-connectors.md) to set up a third-party LLM connector. 
+
+If you use a preconfigured connector for your LLM connector we recommend you add the `exposeConfig: true` parameter within the `xpack.actions.preconfigured` section of the `kibana.yml` config file. This parameter makes debugging easier by adding configuration information to the debug logs, including which large language model the connector uses.