Explain behaviour when value is 0 or less

Signed-off-by: Zeynel Koca <[email protected]>

Author: ZeynelKoca

daprdocs/content/en/reference/components-reference/supported-state-stores/setup-dynamodb.md

@@ -62,7 +62,7 @@ In order to use DynamoDB as a Dapr state store, the table must have a primary ke
 | endpoint          | N  |AWS endpoint for the component to use. Only used for local development. The `endpoint` is unncessary when running against production AWS   | `"http://localhost:4566"`
 | sessionToken      | N  |AWS session token to use.  A session token is only required if you are using temporary security credentials. | `"TOKEN"`
 | ttlAttributeName  | N  |The table attribute name which should be used for TTL. | `"expiresAt"`
-| ttlInSeconds       | N         | Allows specifying a Time-to-live (TTL) in seconds that will be applied to every state store request unless TTL is explicitly defined via the [request metadata]({{% ref "state-store-ttl.md" %}}). | `600`
+| ttlInSeconds       | N         | Allows specifying a Time-to-live (TTL) in seconds that will be applied to every state store request unless TTL is explicitly defined via the [request metadata]({{% ref "state-store-ttl.md" %}}). If set to zero or less, no default TTL is applied, and items will only expire if a TTL is explicitly provided in the request metadata with if ttlAttributeName is set. | `600`
 | partitionKey      | N  |The table primary key or partition key attribute name. This field is used to replace the default primary key attribute name `"key"`. See the section [Partition Keys]({{% ref "setup-dynamodb.md#partition-keys" %}}).  | `"ContractID"`
 | actorStateStore      | N  | Consider this state store for actors. Defaults to "false" | `"true"`, `"false"`