fix cls doc (#1116)

Author: hellertang

website/docs/r/cls_topic.html.markdown

@@ -36,9 +36,9 @@ The following arguments are supported:
 * `topic_name` - (Required) Log topic name.
 * `auto_split` - (Optional) Whether to enable automatic split. Default value: true.
 * `max_split_partitions` - (Optional) Maximum number of partitions to split into for this topic if automatic split is enabled. Default value: 50.
-* `partition_count` - (Optional, ForceNew) Number of log topic partitions. Default value: 1. Maximum value: 10.
+* `partition_count` - (Optional) Number of log topic partitions. Default value: 1. Maximum value: 10.
 * `period` - (Optional) Lifecycle in days. Value range: 1~366. Default value: 30.
-* `storage_type` - (Optional, ForceNew) Log topic storage class. Valid values: hot: real-time storage; cold: offline storage. Default value: hot. If cold is passed in, please contact the customer service to add the log topic to the allowlist first..
+* `storage_type` - (Optional) Log topic storage class. Valid values: hot: real-time storage; cold: offline storage. Default value: hot. If cold is passed in, please contact the customer service to add the log topic to the allowlist first..
 * `tags` - (Optional) Tag description list. Up to 10 tag key-value pairs are supported and must be unique.
 
 ## Attributes Reference