Fix doxygen file level comments

src/wps/http_client.c

@@ -1,4 +1,4 @@
-/**
+/*
  * http_client - HTTP client
  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
  *

src/wps/http_server.c

@@ -1,4 +1,4 @@
-/**
+/*
  * http_server - HTTP server
  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
  *

src/wps/httpread.c

@@ -1,4 +1,4 @@
-/**
+/*
  * httpread - Manage reading file(s) from HTTP/TCP socket
  * Author: Ted Merrill
  * Copyright 2008 Atheros Communications