unique_ptr: Replace _ by - in header file

CMakeLists.txt

@@ -167,7 +167,7 @@ set(${PROJECT_NAME}_HEADERS
     include/eigenpy/scipy-allocator.hpp
     include/eigenpy/scipy-type.hpp
     include/eigenpy/variant.hpp
-    include/eigenpy/std_unique_ptr.hpp
+    include/eigenpy/std-unique-ptr.hpp
     include/eigenpy/swig.hpp
     include/eigenpy/version.hpp)
 

include/eigenpy/eigenpy.hpp

@@ -11,7 +11,7 @@
 #include "eigenpy/expose.hpp"
 
 /// Custom CallPolicies
-#include "eigenpy/std_unique_ptr.hpp"
+#include "eigenpy/std-unique-ptr.hpp"
 
 #define ENABLE_SPECIFIC_MATRIX_TYPE(TYPE) \
   ::eigenpy::enableEigenPySpecific<TYPE>();

unittest/std_unique_ptr.cpp

@@ -2,7 +2,7 @@
 /// @copyright Copyright 2023 CNRS INRIA
 
 #include <eigenpy/eigenpy.hpp>
-#include <eigenpy/std_unique_ptr.hpp>
+#include <eigenpy/std-unique-ptr.hpp>
 
 #include <memory>