Correct doxygen syntax in phosphor-net-ipmid

Resolves openbmc/openbmc#1147

Change-Id: I57ab1b09ec1bf308cc3d97cd30b2d18564beb38b
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
diff --git a/message_handler.hpp b/message_handler.hpp
index 882a077..11cc42a 100644
--- a/message_handler.hpp
+++ b/message_handler.hpp
@@ -26,7 +26,7 @@
         Handler(Handler&&) = default;
         Handler& operator=(Handler&&) = default;
 
-        /*
+        /**
          * @brief Receive the IPMI packet
          *
          * Read the data on the socket, get the parser based on the Session
@@ -37,7 +37,7 @@
          */
         std::unique_ptr<Message> receive();
 
-        /*
+        /**
          * @brief Process the incoming IPMI message
          *
          * The incoming message payload is handled and the command handler for
@@ -93,7 +93,7 @@
 
         parser::SessionHeader sessionHeader  = parser::SessionHeader::IPMI20;
 
-        /*
+        /**
          * @brief Create the response IPMI message
          *
          * The IPMI outgoing message is constructed out of payload and the
@@ -116,7 +116,7 @@
             return outMessage;
         }
 
-        /*
+        /**
          * @brief Extract the command from the IPMI payload
          *
          * @param[in] message - Incoming message
@@ -125,7 +125,7 @@
          */
         uint32_t getCommand(Message& message);
 
-        /*
+        /**
          * @brief Calculate 8 bit 2's complement checksum
          *
          * Initialize checksum to 0. For each byte, checksum = (checksum + byte)