docs edits

Author: paigecalvert

docs/vendor/testing-how-to.md

@@ -42,9 +42,9 @@ To create a cluster using the Replicated CLI:
    Where:
    * `NAME` is any name for the cluster. If `--name` is excluded, a name is automatically generated for the cluster.
    * `K8S_DISTRO` is the Kubernetes distribution for the cluster.
-   * `K8S_VERSION` is the Kubernetes version for the cluster if creating a standard Cloud or VM based cluster.
-      * When creating an Embedded Cluster type using `cluster create`, use of `--version` is optional, and the value passed should be the `Channel release sequence` value, otherwise the latest available release on the channel will be used.
-      * When creating a kURL cluster type using `cluster create`, use of `--version` is optional, and the value passed should be the kURL Installer ID if not using "latest" 
+   * `K8S_VERSION` is the Kubernetes version for the cluster if creating a standard Cloud or VM-based cluster. If creating an Embedded Cluster or kURL cluster type,`--version` is optional:
+      * For Embedded Cluster types, `--verison` is the latest available release on the channel by default. Otherwise, to specify a different release, set `--version` to the `Channel release sequence` value for the release.  
+      * For kURL cluster types, `--verison` is the `"latest"` kURL Installer ID by default.  Otherwise, to specify a different kURL Installer, set `--version` to the kURL Installer ID. 
    * `DISK_SIZE` is the disk size (GiB) to request per node.
    * `INSTANCE_TYPE` is the instance type to use for each node.
    * (Embedded Cluster only) `License ID` - A valid customer license is required to create an Embedded Cluster and can be passed as `--license-id [value]`.