Documentation: In the cluster attribute there is a need to use a full path when using a specific cluster

[tornizanQ]

In the "VM Cluster" attribute there is a need to use a full path when using a specific host, for example: "clustername/10.115.136.120".
Need to add it to the documentation and on in the info button next to the "VM Cluster"
attribute in the discovery.

[alexazarh]

@TomerAdmon - please provide updated description