fix: Remove extra comma

use-case-applicability/machinetag.json

@@ -44,5 +44,5 @@
       "expanded": "Confirmed Attack attempt without IR actions",
       "description": "This category reflects an attempt by a threat actor, which in the end could be prevented by in place security measures but passed security controls associated with the delivery phase of the Cyber Kill Chain."
     }
-  ],
+  ]
 }