update documentation

website/docs/r/kinesis_stream.html.markdown

@@ -39,7 +39,7 @@ The following arguments are supported:
 * `name` - (Required) A name to identify the stream. This is unique to the AWS account and region the Stream is created in.
 * `shard_count` – (Required) The number of shards that the stream will use.
 Amazon has guidelines for specifying the Stream size that should be referenced when creating a Kinesis stream. See [Amazon Kinesis Streams][2] for more.
-* `retention_period` - (Optional) Length of time data records are accessible after they are added to the stream. The maximum value of a stream's retention period is 168 hours. Minimum value is 24. Default is 24.
+* `retention_period` - (Optional) Length of time data records are accessible after they are added to the stream. The maximum value of a stream's retention period is 8760 hours. Minimum value is 24. Default is 24.
 * `shard_level_metrics` - (Optional) A list of shard-level CloudWatch metrics which can be enabled for the stream. See [Monitoring with CloudWatch][3] for more. Note that the value ALL should not be used; instead you should provide an explicit list of metrics you wish to enable.
 * `enforce_consumer_deletion` - (Optional) A boolean that indicates all registered consumers should be deregistered from the stream so that the stream can be destroyed without error. The default value is `false`.
 * `encryption_type` - (Optional) The encryption type to use. The only acceptable values are `NONE` or `KMS`. The default value is `NONE`.