editorial fix to a comment

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1109 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/dns/cpp/messagerenderer.h

@@ -77,7 +77,7 @@ public:
     /// \param buffer An \c OutputBuffer object to which wire format data is
     /// written.
     MessageRenderer(OutputBuffer& buffer);
-    /// \brief The default destructor.
+    /// \brief The destructor.
     ///
     /// The destructor does nothing on the given \c buffer on construction;
     /// in fact, it is expected that the user will use the resulting buffer