docs: Fixing doxygen warnings

Change-Id: Ic85f86f4de8224e2fa5d1c41f6afb0f367af5b37
Refs: #3210
diff --git a/daemon/table/name-tree.cpp b/daemon/table/name-tree.cpp
index 3ef1893..0f730d1 100644
--- a/daemon/table/name-tree.cpp
+++ b/daemon/table/name-tree.cpp
@@ -68,7 +68,9 @@
   }
 };
 
+/// @cond NoDocumentation
 typedef boost::mpl::if_c<sizeof(size_t) >= 8, Hash64, Hash32>::type CityHash;
+/// @endcond
 
 // Interface of different hash functions
 size_t