docs(idempotency): fix description in Advanced table

docs/utilities/idempotency.md

@@ -817,7 +817,7 @@ You can override and further extend idempotency behavior via **`IdempotencyConfi
 | Parameter                       | Default | Description                                                                                                                                                                                                                                |
 | ------------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
 | **event_key_jmespath**          | `""`    | JMESPath expression to extract the idempotency key from the event record using [built-in functions](./jmespath_functions.md#built-in-jmespath-functions){target="_blank"}                                                                  |
-| **payload_validation_jmespath** | `""`    | JMESPath expression to validate whether certain parameters have changed in the event while the event payload _e.g., payload tampering._                                                                                                    |
+| **payload_validation_jmespath** | `""`    | JMESPath expression to validate that the specified fields haven't changed across requests for the same idempotency key _e.g., payload tampering._                                                                                          |
 | **raise_on_no_idempotency_key** | `False` | Raise exception if no idempotency key was found in the request                                                                                                                                                                             |
 | **expires_after_seconds**       | 3600    | The number of seconds to wait before a record is expired, allowing a new transaction with the same idempotency key                                                                                                                         |
 | **use_local_cache**             | `False` | Whether to cache idempotency results in-memory to save on persistence storage latency and costs                                                                                                                                            |