Rename header guard marco in concepts.hlsl.

Author: theoreticalphysicsftw

include/nbl/builtin/hlsl/concepts.hlsl

@@ -2,8 +2,8 @@
 // This file is part of the "Nabla Engine".
 // For conditions of distribution and use, see copyright notice in nabla.h
 
-#ifndef _NBL_BUILTIN_HLSL_CPP_COMPAT_CONCEPT_INCLUDED_
-#define _NBL_BUILTIN_HLSL_CPP_COMPAT_CONCEPT_INCLUDED_
+#ifndef _NBL_BUILTIN_HLSL_CONCEPTS_INCLUDED_
+#define _NBL_BUILTIN_HLSL_CONCEPTS_INCLUDED_
 
 #include <nbl/builtin/hlsl/cpp_compat/vector.hlsl>
 #include <nbl/builtin/hlsl/cpp_compat/matrix.hlsl>