fix coal deprecated header warning

Author: nim65s

include/hpp/fcl/coal.hpp

@@ -1,15 +1,14 @@
-#ifndef HPP_FCL_COAL_HH
-#define HPP_FCL_COAL_HH
+#ifndef HPP_FCL_COAL_HPP
+#define HPP_FCL_COAL_HPP
 
 #include <coal/config.hh>
 #include <coal/deprecated.hh>
 
 #define COAL_BACKWARD_COMPATIBILITY_WITH_HPP_FCL
 
-#pragma message COAL_DEPRECATED_HEADER( \
-    "Please update your includes from 'hpp/fcl' to 'coal'")
+COAL_DEPRECATED_HEADER("Please update your includes from 'hpp/fcl' to 'coal'")
 
 #define HPP_FCL_VERSION_AT_LEAST(major, minor, patch) \
   COAL_VERSION_AT_LEAST(major, minor, patch)
 
-#endif  // COAL_FWD_HH
+#endif  // COAL_FWD_HPP