face: eliminate Transport::Packet wrapper type

Refs: #4843
Change-Id: I5977be55e8bdac33c989e3b8523fea764f304c37
diff --git a/daemon/face/lp-reassembler.hpp b/daemon/face/lp-reassembler.hpp
index 2c5ff91..e9f0556 100644
--- a/daemon/face/lp-reassembler.hpp
+++ b/daemon/face/lp-reassembler.hpp
@@ -72,13 +72,13 @@
   const LinkService*
   getLinkService() const;
 
-  /** \brief adds received fragment to buffer
-   *  \param remoteEndpoint endpoint whose sends the packet
-   *  \param packet received fragment;
-   *                must have Fragment field
-   *  \return whether network-layer packet has been completely received,
+  /** \brief adds received fragment to the buffer
+   *  \param remoteEndpoint endpoint that sent the packet
+   *  \param packet received fragment; must have Fragment field
+   *  \return a tuple containing:
+   *          whether a network-layer packet has been completely received,
    *          the reassembled network-layer packet,
-   *          and the first fragment for inspecting other NDNLPv2 headers
+   *          the first fragment for inspecting other NDNLPv2 headers
    *  \throw tlv::Error packet is malformed
    */
   std::tuple<bool, Block, lp::Packet>