src: Fixing several includes

While the includes were working for the library compilation, they got
broken when application included files (applications use
``<ndn-cpp-dev/`` prefix).

Change-Id: Ic92ee6cdd3efb095cac7081464392c45c530b0c2
diff --git a/src/management/fib-management-options.hpp b/src/management/fib-management-options.hpp
index db3f765..80b3964 100644
--- a/src/management/fib-management-options.hpp
+++ b/src/management/fib-management-options.hpp
@@ -10,8 +10,8 @@
 #ifndef NDN_FIB_MANAGEMENT_HPP
 #define NDN_FIB_MANAGEMENT_HPP
 
-#include "encoding/block.hpp"
-#include "encoding/tlv-nfd-control.hpp"
+#include "../encoding/block.hpp"
+#include "../encoding/tlv-nfd-control.hpp"
 #include "name.hpp"
 
 namespace ndn {