Fix typo for inlcude name.hpp
diff --git a/ndn-cpp/key.hpp b/ndn-cpp/key.hpp
index 7980fab..6cf2a1b 100644
--- a/ndn-cpp/key.hpp
+++ b/ndn-cpp/key.hpp
@@ -8,7 +8,7 @@
 
 #include <vector>
 #include "c/key.h"
-#include "Name.hpp"
+#include "name.hpp"
 
 namespace ndn {