Update t1059 006 (#2072)
Update t1059 006 (#2072)

* Update T1059.006.yaml

Remove ATT&CK technique description from test description.

* Update T1059.006.yaml

Clarify description to focus on the test, while still referencing the vulnerability and exploitation reporting by Volexity.
redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team