[2902] Corrected some doxygen errors.

src/bin/dhcp4/dhcp4_srv.h

@@ -71,7 +71,8 @@ class Dhcpv4Srv : public boost::noncopyable {
     /// @param dbconfig Lease manager configuration string.  The default
     ///        of the "memfile" manager is used for testing.
     /// @param use_bcast configure sockets to support broadcast messages.
-    /// @param specifies if it is desired to support direct V4 traffic.
+    /// @param direct_response_desired specifies if it is desired to
+    /// use direct V4 traffic.
     Dhcpv4Srv(uint16_t port = DHCP4_SERVER_PORT,
               const char* dbconfig = "type=memfile",
               const bool use_bcast = true,

src/lib/dhcp/pkt_filter_lpf.h

@@ -68,7 +68,7 @@ public:
 
     /// @brief Send packet over specified socket.
     ///
-    /// @oaram iface interface to be used to send packet
+    /// @param iface interface to be used to send packet
     /// @param sockfd socket descriptor
     /// @param pkt packet to be sent
     ///