docs(idempotency): fix descriptions in Advanced table (#3092)

Co-authored-by: Andrea Amorosi <[email protected]>

Author: garysassano

docs/utilities/idempotency.md

@@ -569,16 +569,16 @@ When using DynamoDB as a persistence layer, you can alter the attribute names by
 
 Idempotent decorator can be further configured with **`IdempotencyConfig`** as seen in the previous examples. These are the available options for further configuration
 
-| Parameter                     | Default | Description                                                                                                                                                                                |
-| ----------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| **eventKeyJmespath**          | `''`    | JMESPath expression to extract the idempotency key from the event                                                                                                                          |
-| **payloadValidationJmespath** | `''`    | JMESPath expression to validate whether certain parameters have changed in the event while the event payload                                                                               |
-| **throwOnNoIdempotencyKey**   | `false` | Throw an error if no idempotency key was found in the request                                                                                                                              |
-| **expiresAfterSeconds**       | 3600    | The number of seconds to wait before a record is expired                                                                                                                                   |
-| **useLocalCache**             | `false` | Whether to locally cache idempotency results                                                                                                                                               |
-| **localCacheMaxItems**        | 256     | Max number of items to store in local cache                                                                                                                                                |
-| **hashFunction**              | `md5`   | Function to use for calculating hashes, as provided by the [crypto](https://nodejs.org/api/crypto.html#cryptocreatehashalgorithm-options){target="_blank"} module in the standard library. |
-| **responseHook**               | `undefined`  | Function to use for processing the stored Idempotent response. This function hook is called when an existing idempotent response is found. See [Manipulating The Idempotent Response](idempotency.md#manipulating-the-idempotent-response) |
+| Parameter                     | Default     | Description                                                                                                                                                                                                                                |
+| ----------------------------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| **eventKeyJmespath**          | `''`        | JMESPath expression to extract the idempotency key from the event record using [built-in functions](./jmespath.md#built-in-jmespath-functions){target="_blank"}                                                                            |
+| **payloadValidationJmespath** | `''`        | JMESPath expression to validate that the specified fields haven't changed across requests for the same idempotency key _e.g., payload tampering._                                                                                          |
+| **throwOnNoIdempotencyKey**   | `false`     | Throw an error if no idempotency key was found in the request                                                                                                                                                                              |
+| **expiresAfterSeconds**       | 3600        | The number of seconds to wait before a record is expired, allowing a new transaction with the same idempotency key                                                                                                                         |
+| **useLocalCache**             | `false`     | Whether to cache idempotency results in-memory to save on persistence storage latency and costs                                                                                                                                            |
+| **localCacheMaxItems**        | 256         | Max number of items to store in local cache                                                                                                                                                                                                |
+| **hashFunction**              | `md5`       | Function to use for calculating hashes, as provided by the [crypto](https://nodejs.org/api/crypto.html#cryptocreatehashalgorithm-options){target="_blank"} module in the standard library.                                                 |
+| **responseHook**              | `undefined` | Function to use for processing the stored Idempotent response. This function hook is called when an existing idempotent response is found. See [Manipulating The Idempotent Response](idempotency.md#manipulating-the-idempotent-response) |
 
 ### Handling concurrent executions with the same payload