minor missing description

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/jinmei-dnsrrparams@452 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/dns/cpp/name.h

@@ -330,6 +330,7 @@ public:
     /// <code>buffer.getCapacity() - buffer.getLength() >= Name::MAX_WIRE</code>
     /// then this method should not throw an exception.
     ///
+    /// \param buffer An output buffer to store the wire data.
     void toWire(OutputBuffer& buffer) const;
     //@}