[PACKET_IO]format code style

src/packet_io/pcap_file_mode/pio_pcap_file.cpp

@@ -22,13 +22,13 @@
 #include "../../../sdk/include/logger.h"
 #include "../../common/time_helper.h"
 
-/*
+/**
  * @brief validate path is a valid plain file or directory
  *
  * @retval failed (-1) successful (0), 
  *         if success, dir == nullptr <---> means path is plain file
  *                     dir != nullptr <---> means path is directory
-**/
+ */
 static int validate_directory_or_file(const char *path, DIR **dir) 
 {
     DIR *temp_dir = nullptr;
@@ -58,11 +58,11 @@ static int validate_directory_or_file(const char *path, DIR **dir)
     return ret;
 }
 
-/*
+/**
  * @brief get the timestamp of the first packet and rewind
  *
  * @retval true(success), false(error)
-*/
+ */
 static bool peek_first_packet_timestamp(struct pcap_plain_file_info *pfile_info) 
 {
     int ret = pcap_next_ex(pfile_info->pcap_handle, &pfile_info->first_pkt_hdr,