docs - store_prompts_in_spend_logs

docs/my-website/docs/proxy/config_settings.md

@@ -177,6 +177,7 @@ general_settings:
 | service_account_settings | List[Dict[str, Any]] | Set `service_account_settings` if you want to create settings that only apply to service account keys (Doc on service accounts)[./service_accounts.md] | 
 | image_generation_model | str | The default model to use for image generation - ignores model set in request |
 | store_model_in_db | boolean | If true, allows `/model/new` endpoint to store model information in db. Endpoint disabled by default. [Doc on `/model/new` endpoint](./model_management.md#create-a-new-model) |
+| store_prompts_in_spend_logs | boolean | If true, allows prompts and responses to be stored in the spend logs table. |
 | max_request_size_mb | int | The maximum size for requests in MB. Requests above this size will be rejected. |
 | max_response_size_mb | int | The maximum size for responses in MB. LLM Responses above this size will not be sent. |
 | proxy_budget_rescheduler_min_time | int | The minimum time (in seconds) to wait before checking db for budget resets. **Default is 597 seconds** |