fixes a bug where there were duplicated sentences

Change-Id: Id8375e65d0f9d6aa37e3c43be10c8a23e51d07fe
Closes-Bug: 1295089
changes to training-cluster-by-script.xml

added comma and plural to commands
changed sentence with You
removed extra white space

Change-Id: Id2236a8655c08a2c992754cbd3ed15d74cbf5668
Merge "changes to training-cluster-by-script.xml"