Documentation for kubernetes cluster node count minimum differentiati…

…ng user and system pools (#13871)

website/docs/r/kubernetes_cluster_node_pool.html.markdown

@@ -155,13 +155,13 @@ If `enable_auto_scaling` is set to `true`, then the following fields can also be
 
 * `min_count` - (Required) The minimum number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` and must be less than or equal to `max_count`.
 
-* `node_count` - (Optional) The initial number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` and must be a value in the range `min_count` - `max_count`.
+* `node_count` - (Optional) The initial number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` (inclusive) for user pools and between `1` and `1000` (inclusive) for system pools and must be a value in the range `min_count` - `max_count`.
 
 -> **NOTE:** If you're specifying an initial number of nodes you may wish to use [Terraform's `ignore_changes` functionality](https://www.terraform.io/docs/configuration/resources.html#ignore_changes) to ignore changes to this field.
 
 If `enable_auto_scaling` is set to `false`, then the following fields can also be configured:
 
-* `node_count` - (Required) The number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000`.
+* `node_count` - (Required) The number of nodes which should exist within this Node Pool. Valid values are between `0` and `1000` (inclusive) for user pools and between `1` and `1000` (inclusive) for system pools.
 
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