merge detail folders

Change-Id: Id8f126bb4f4dd621f224d3d705b22f85e00babad
diff --git a/src/ca-module.hpp b/src/ca-module.hpp
index 3fb79cb..d29f49b 100644
--- a/src/ca-module.hpp
+++ b/src/ca-module.hpp
@@ -22,8 +22,8 @@
 #define NDNCERT_CA_MODULE_HPP
 
 #include "configuration.hpp"
-#include "protocol-detail/crypto-helper.hpp"
-#include "ca-detail/ca-storage.hpp"
+#include "detail/crypto-helper.hpp"
+#include "detail/ca-storage.hpp"
 
 namespace ndn {
 namespace ndncert {