Fix the wrong log verbose switch name for Art's lock atrace

The switch name in the code comment is not the same as in the parser.

Test: manual
Change-Id: Ibd9094e4963a65e451f311d639cbb1ad84237baf
diff --git a/libartbase/base/logging.h b/libartbase/base/logging.h
index 7a421a4..ef03894 100644
--- a/libartbase/base/logging.h
+++ b/libartbase/base/logging.h
@@ -56,7 +56,7 @@
   bool verifier;
   bool verifier_debug;   // Only works in debug builds.
   bool image;
-  bool systrace_lock_logging;  // Enabled with "-verbose:sys-locks".
+  bool systrace_lock_logging;  // Enabled with "-verbose:systrace-locks".
   bool agents;
   bool dex;  // Some dex access output etc.
   bool plugin;  // Used by some plugins.