docs: Documentation update

Change-Id: I6f916eb822a59e980e8fb1134886c3431755119c
diff --git a/utils/topology/rocketfuel-map-reader.cpp b/utils/topology/rocketfuel-map-reader.cpp
index f5a424e..b53b03b 100644
--- a/utils/topology/rocketfuel-map-reader.cpp
+++ b/utils/topology/rocketfuel-map-reader.cpp
@@ -560,6 +560,8 @@
   }
 }
 
+/// @cond include_hidden
+
 template<class Names, class Colors>
 class name_color_writer {
 public:
@@ -589,6 +591,8 @@
   return name_color_writer<Names, Colors>(n, c);
 }
 
+/// @endcond
+
 void
 RocketfuelMapReader::SaveGraphviz(const std::string& file)
 {