initial reformatting of comments for Doxygen

racing.cpp

@@ -1,9 +1,9 @@
-// Hyperbolic Rogue
+// Hyperbolic Rogue - Racing
+// Copyright (C) 2011-2019 Zeno Rogue, see 'hyper.cpp' for details
 
-// namespaces for complex features (whirlwind, whirlpool, elec, princess, clearing, 
-// mirror, hive, heat + livecaves, etc.)
-
-// Copyright (C) 2011-2018 Zeno Rogue, see 'hyper.cpp' for details
+/** \file racing.cpp
+ *  \brief racing mode
+ */
 
 namespace hr {