Update prevention_policy_hawk sample

samples/prevention_policy/prevention_policy_hawk.py

@@ -353,7 +353,7 @@ def consume_command_line():
     parser = ArgumentParser(description=shiny_description(__doc__),
                             formatter_class=RawTextHelpFormatter
                             )
-    parser.add_argument("-d", "--debug",
+    parser.add_argument("-debug", "--debug",
                         help="Enable API debugging",
                         action="store_true",
                         default=False