Update testing-how-to.md

docs/vendor/testing-how-to.md

@@ -43,7 +43,7 @@ To create a cluster using the Replicated CLI:
    * `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 if not using "latest"
+      * 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" 
    * `DISK_SIZE` is the disk size (GiB) to request per node.
    * `INSTANCE_TYPE` is the instance type to use for each node.